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sciencefriday.com

sciencefriday.com is SSL secured

Free website and domain report on sciencefriday.com

Last Updated: 15th December, 2020 Update Now
Overview

Snoop Summary for sciencefriday.com

This is a free and comprehensive report about sciencefriday.com. The domain sciencefriday.com is currently hosted on a server located in United States with the IP address 192.0.66.112, where USD is the local currency and the local language is English. Sciencefriday.com has the potential to be earning an estimated $11 USD per day from advertising revenue. If sciencefriday.com was to be sold it would possibly be worth $8,126 USD (based on the daily revenue potential of the website over a 24 month period). Sciencefriday.com is quite popular with an estimated 3,901 daily unique visitors. This report was last updated 15th December, 2020.

About sciencefriday.com

Site Preview: sciencefriday.com sciencefriday.com
Title: NPR: Science Friday with Ira Flatow
Description: Science Friday is your trusted source for news and entertaining stories about science. It's brain fun for curious people
Keywords and Tags:
Related Terms: friday 5, friday after next, friday five, friday fortnite bracket, friday night funkin, good friday with skhumba, ira.com, mfa first friday, next friday cast, science 2.0
Fav Icon:
Age: Over 28 years old
Domain Created: 21st February, 1996
Domain Updated: 2nd March, 2018
Domain Expires: 22nd February, 2028
Review

Snoop Score

3/5 (Great!)

Valuation

$8,126 USD
Note: All valuation figures are estimates.

Popularity

Modest
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 160,177
Alexa Reach:
SEMrush Rank (US):
SEMrush Authority Score:
Moz Domain Authority: 0
Moz Page Authority: 0

Organic vs Paid (Google Ads)

Traffic

Visitors

Daily Visitors: 3,901
Monthly Visitors: 118,734
Yearly Visitors: 1,423,865
Note: All visitors figures are estimates.

Visitors By Country

Revenue

Revenue

Daily Revenue: $11 USD
Monthly Revenue: $338 USD
Yearly Revenue: $4,058 USD
Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Top New Follow Links

Top Ranking Keywords (US)

Domain Analysis

Value Length
Domain: sciencefriday.com 17
Domain Name: sciencefriday 13
Extension (TLD): com 3
Expiry Check:

Page Speed Analysis

Average Load Time: 1.50 seconds
Load Time Comparison: Faster than 62% of sites

PageSpeed Insights

Avg. (All Categories) 78
Performance 89
Accessibility 89
Best Practices 71
SEO 91
Progressive Web App 48
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.sciencefriday.com/
Updated: 15th December, 2020

1.85 seconds
First Contentful Paint (FCP)
47%
45%
8%

0.00 seconds
First Input Delay (FID)
99%
0%
1%

Simulate loading on desktop
89

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for sciencefriday.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Speed Index — 1.2 s
The time taken for the page contents to be visibly populated.
Time to Interactive — 1.7 s
The time taken for the page to become fully interactive.
Total Blocking Time — 10 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).
Cumulative Layout Shift — 0.001
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

First CPU Idle — 1.6 s
The time taken for the page's main thread to be quiet enough to handle input.
Max Potential First Input Delay — 60 ms
Users could experience a delay when interacting with the page.
Estimated Input Latency — 10 ms
The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive sciencefriday.com as laggy when the latency is higher than 0.05 seconds.
Network Requests
Below is a list of network requests that were made during page load.
URL Start Time (Ms) End Time (Ms) Transfer Size (Bytes) Resource Size (Bytes) Status Code MIME Type Resource Type
http://sciencefriday.com/
0
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Script
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Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
240.045
7.902
329.597
14.944
365.195
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428.055
105.815
544.982
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19.484
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814.545
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834.292
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853.132
23.896
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19.193
898.842
14.95
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13.332
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data

Opportunities

Properly size images
Images can slow down the page's load time. Sciencefriday.com should consider serving more appropriate-sized images.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Sciencefriday.com should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Sciencefriday.com should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Sciencefriday.com should consider minifying JS files.
Remove unused CSS — Potential savings of 51 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Sciencefriday.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.sciencefriday.com/_static/??-eJx1T9sOgjAM/SFHlZCpD8ZvGaNItRvLOkL29w7QxER9a0/OFeagyFueOhSwItCRJGh5tA/F1EYTM0jKjJUjXxXCDorCjj6hTxB4upGXBQomCnL+OL/YaUBXUsQSeot9pM7kNXML+GfuDLEdyAXVj1HNAYwIpq1tQZzafH8WdJN629wxBVNWnat6lb7+RXJ1l4PeHxuta316AruKZWA=
58958
52258
Remove unused JavaScript — Potential savings of 124 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2020120801.js
100221
80194
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVzjGu7MfwWWqba3Ppl0mquz69davMIQpDCAROzjn50oeiMNlQHbCeWuwq0NzTImJaTPyiH5FUxC0ZgWuyzUkgiS6hbjGxNpP5wnFWh0yuEDArRoGzlUeW3Dr9W9gr94QNYks5BOWgiP+dusMd/VnzCnq0BYMh69WIQYBUoaxL3QS02jCDfF/mL2VTMbgnHa3PDM3g5iEXL/EQ21vYIiQLI6Ez81m4h+Qy6ZgdUMIjde06fi6H19X7MLwNH9MJQg7BYg==
75030
47084
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats
Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.
Enable text compression — Potential savings of 8 KiB
Text-based resources should be served with compression, such as gzip, deflate or brotli.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://cdn.knightlab.com/libs/soundcite/latest/js/soundcite.min.js?ver=5.6
9847
6872
https://cdn.knightlab.com/libs/soundcite/latest/css/player.css?ver=5.6
2137
1528
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 100 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.sciencefriday.com/
98.202
Avoid multiple page redirects — Potential savings of 190 ms
Redirects can cause additional delays before the page can begin loading. Sciencefriday.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://sciencefriday.com/
190
https://www.sciencefriday.com/
0
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers — Potential savings of 14 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://cdn.parsely.com/keys/sciencefriday.com/p.js
7658
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVzjGu7MfwWWqba3Ppl0mquz69davMIQpDCAROzjn50oeiMNlQHbCeWuwq0NzTImJaTPyiH5FUxC0ZgWuyzUkgiS6hbjGxNpP5wnFWh0yuEDArRoGzlUeW3Dr9W9gr94QNYks5BOWgiP+dusMd/VnzCnq0BYMh69WIQYBUoaxL3QS02jCDfF/mL2VTMbgnHa3PDM3g5iEXL/EQ21vYIiQLI6Ez81m4h+Qy6ZgdUMIjde06fi6H19X7MLwNH9MJQg7BYg==
6587

Diagnostics

Avoids enormous network payloads — Total size was 714 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://www.sciencefriday.com/wp-content/uploads/2020/12/BestBooks2020Zoom-mainNOTEXT.jpg?w=625&h=450&crop=1
146162
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2020120801.js
100221
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVzjGu7MfwWWqba3Ppl0mquz69davMIQpDCAROzjn50oeiMNlQHbCeWuwq0NzTImJaTPyiH5FUxC0ZgWuyzUkgiS6hbjGxNpP5wnFWh0yuEDArRoGzlUeW3Dr9W9gr94QNYks5BOWgiP+dusMd/VnzCnq0BYMh69WIQYBUoaxL3QS02jCDfF/mL2VTMbgnHa3PDM3g5iEXL/EQ21vYIiQLI6Ez81m4h+Qy6ZgdUMIjde06fi6H19X7MLwNH9MJQg7BYg==
75030
https://www.sciencefriday.com/_static/??-eJx1T9sOgjAM/SFHlZCpD8ZvGaNItRvLOkL29w7QxER9a0/OFeagyFueOhSwItCRJGh5tA/F1EYTM0jKjJUjXxXCDorCjj6hTxB4upGXBQomCnL+OL/YaUBXUsQSeot9pM7kNXML+GfuDLEdyAXVj1HNAYwIpq1tQZzafH8WdJN629wxBVNWnat6lb7+RXJ1l4PeHxuta316AruKZWA=
58958
https://www.googletagmanager.com/gtm.js?id=GTM-M89JXQH
33057
https://www.sciencefriday.com/_static/??-eJyVjcEOwiAQRH/IsjXGqgfjp5gWVl0CC2VBw9+LCSZePU1mJvMGXnHQgTNyhujKnVjAkKxFWux9iwepktFDLIsjDVagF1cdCmdlZQM/kPxAjwKiCVnjLZGZ62f0RDYhfT+UJ/5zaaObKzZdC6aquu2giz9vp3E6Hnbj/mTfTYVQHg==
31314
https://fast.fonts.net/dv2/14/6674200a-eb0b-4457-9340-340059fa9694.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
21940
https://cdn.parsely.com/keys/sciencefriday.com/p.js
21189
https://fast.fonts.net/dv2/14/a7333c48-140e-4bcb-a574-a2dcfcd4a621.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
20522
https://fast.fonts.net/dv2/14/8666e3e0-713e-463a-8bb9-2d3c6b8050b1.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
20264
Avoids an excessive DOM size — 301 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
301
Maximum DOM Depth
SHOW DETAILS
12
Maximum Child Elements
SHOW DETAILS
19
Avoid chaining critical requests — 16 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Sciencefriday.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures — 1 user timing
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Name Type Start Time (Ms) Duration (Ms)
gpt-tag-load
Mark
843.558
JavaScript execution time — 0.1 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.sciencefriday.com/
239.03
4.607
2.315
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVzjGu7MfwWWqba3Ppl0mquz69davMIQpDCAROzjn50oeiMNlQHbCeWuwq0NzTImJaTPyiH5FUxC0ZgWuyzUkgiS6hbjGxNpP5wnFWh0yuEDArRoGzlUeW3Dr9W9gr94QNYks5BOWgiP+dusMd/VnzCnq0BYMh69WIQYBUoaxL3QS02jCDfF/mL2VTMbgnHa3PDM3g5iEXL/EQ21vYIiQLI6Ez81m4h+Qy6ZgdUMIjde06fi6H19X7MLwNH9MJQg7BYg==
195.363
132.778
3.492
Unattributable
81.693
0.996
0.14
Minimizes main-thread work — 0.7 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
281.579
Style & Layout
181.256
Other
151.692
Rendering
44.95
Parse HTML & CSS
24.294
Script Parsing & Compilation
22.819
Keep request counts low and transfer sizes small — 43 requests • 715 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
43
731884
Script
14
351240
Image
10
162471
Font
8
138987
Stylesheet
4
64242
Document
1
11012
Other
5
3467
Media
1
465
Third-party
29
361080
Minimize third-party usage — Third-party code blocked the main thread for 0 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
121712
0
SHOW DETAILS
120180
0
SHOW DETAILS
38622
0
SHOW DETAILS
33057
0
SHOW DETAILS
21418
0
SHOW DETAILS
13988
0
SHOW DETAILS
3536
0
SHOW DETAILS
3313
0
SHOW DETAILS
1853
0
SHOW DETAILS
1570
0
SHOW DETAILS
1366
0
SHOW DETAILS
465
0
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
div
Avoid large layout shifts — 5 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
RADIO PODCASTS STORIES EDUCATE EVENTS
0.0002816144653313
Double Your Impact
0.00022088723557749
RADIO PODCASTS STORIES EDUCATE EVENTS Shop Donate Search for:
0.00016272917425988
Science Friday
7.8179158141109E-5
Shop Donate
7.0472497891122E-5
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 2 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://cdn.parsely.com/keys/sciencefriday.com/p.js
1680
61
https://www.sciencefriday.com/
423
53
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Avoids large JavaScript libraries with smaller alternatives — 0 large libraries found
It is recommended to work with smaller JavaScript libraries to reduce your bundle size and avoid poor performance.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Metrics

First Contentful Paint — 1.0 s
The time taken for the first image or text on the page to be rendered.
Largest Contentful Paint — 1.8 s
The timing of the largest text or image that is painted.

Other

First Meaningful Paint — 1.3 s
The time taken for the primary content of the page to be rendered.

Opportunities

Eliminate render-blocking resources — Potential savings of 630 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Sciencefriday.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://fast.fonts.net/cssapi/3f63d129-3acd-4f74-b7b4-759653645f9d.css
1817
230
https://www.sciencefriday.com/_static/??-eJx1T9sOgjAM/SFHlZCpD8ZvGaNItRvLOkL29w7QxER9a0/OFeagyFueOhSwItCRJGh5tA/F1EYTM0jKjJUjXxXCDorCjj6hTxB4upGXBQomCnL+OL/YaUBXUsQSeot9pM7kNXML+GfuDLEdyAXVj1HNAYwIpq1tQZzafH8WdJN629wxBVNWnat6lb7+RXJ1l4PeHxuta316AruKZWA=
58958
270
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVzjGu7MfwWWqba3Ppl0mquz69davMIQpDCAROzjn50oeiMNlQHbCeWuwq0NzTImJaTPyiH5FUxC0ZgWuyzUkgiS6hbjGxNpP5wnFWh0yuEDArRoGzlUeW3Dr9W9gr94QNYks5BOWgiP+dusMd/VnzCnq0BYMh69WIQYBUoaxL3QS02jCDfF/mL2VTMbgnHa3PDM3g5iEXL/EQ21vYIiQLI6Ez81m4h+Qy6ZgdUMIjde06fi6H19X7MLwNH9MJQg7BYg==
75030
510
https://cdn.knightlab.com/libs/soundcite/latest/css/player.css?ver=5.6
3132
230
Preload key requests — Potential savings of 730 ms
Key requests can be preloaded by using '<link rel=preload>'. Sciencefriday.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
URL Potential Savings (Ms)
https://www.sciencefriday.com/wp-content/themes/sciencefriday/fonts/genericons/genericons-regular-webfont.ttf
730
https://www.sciencefriday.com/wp-content/themes/sciencefriday/fonts/scifri/scifri-icons.woff
590

Diagnostics

Serve static assets with an efficient cache policy — 16 resources found
Sciencefriday.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://s3.amazonaws.com/scifri-segments/scifri201503132.mp3
0
465
https://srv-2020-12-15-18.pixel.parsely.com/plogger/?rand=1608056535666&plid=52982051&idsite=sciencefriday.com&url=https%3A%2F%2Fwww.sciencefriday.com%2F&urlref=&screen=800x600%7C800x600%7C24&data=%7B%7D&sid=1&surl=https%3A%2F%2Fwww.sciencefriday.com%2F&sref=&sts=1608056535657&slts=0&title=Science+Friday&date=Tue+Dec+15+2020+10%3A22%3A15+GMT-0800+(Pacific+Standard+Time)&action=pageview&pvid=10198970&u=pid%3D11b579dd70dc36579ea509de3de8eeb5
0
229
https://sciencefriday.disqus.com/count.js
300000
1570
https://www.google-analytics.com/analytics.js
7200000
19452
https://ssl.google-analytics.com/ga.js
7200000
17803
https://cdn.knightlab.com/libs/soundcite/latest/js/soundcite.min.js?ver=5.6
14400000
10856
https://cdn.knightlab.com/libs/soundcite/latest/css/player.css?ver=5.6
14400000
3132
https://cdn.parsely.com/keys/sciencefriday.com/p.js
86400000
21189
https://fast.fonts.net/cssapi/3f63d129-3acd-4f74-b7b4-759653645f9d.css
604800000
1817
https://www.sciencefriday.com/wp-content/uploads/2020/12/BestBooks2020Zoom-mainNOTEXT.jpg?w=625&h=450&crop=1
2592000000
146162
https://fast.fonts.net/dv2/14/6674200a-eb0b-4457-9340-340059fa9694.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
7776000000
21940
https://fast.fonts.net/dv2/14/a7333c48-140e-4bcb-a574-a2dcfcd4a621.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
7776000000
20522
https://fast.fonts.net/dv2/14/8666e3e0-713e-463a-8bb9-2d3c6b8050b1.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
7776000000
20264
https://fast.fonts.net/dv2/14/248477c6-2bfb-4740-a310-f92866a57402.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
7776000000
20015
https://fast.fonts.net/dv2/14/1db9bec7-f497-4294-8b5a-7bb14cb10bcd.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
7776000000
19948
https://fast.fonts.net/dv2/14/1c0840de-f0f0-478a-b326-93eab2f22001.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
7776000000
15339

Diagnostics

Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
URL Potential Savings (Ms)
https://fast.fonts.net/dv2/14/a7333c48-140e-4bcb-a574-a2dcfcd4a621.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
14.86700004898
https://www.sciencefriday.com/wp-content/themes/sciencefriday/fonts/scifri/scifri-icons.woff
15.641000005417
https://fast.fonts.net/dv2/14/8666e3e0-713e-463a-8bb9-2d3c6b8050b1.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
14.776000054553
https://fast.fonts.net/dv2/14/6674200a-eb0b-4457-9340-340059fa9694.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
15.91900002677
https://www.sciencefriday.com/wp-content/themes/sciencefriday/fonts/genericons/genericons-regular-webfont.ttf
44.216000009328
https://fast.fonts.net/dv2/14/248477c6-2bfb-4740-a310-f92866a57402.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
15.146999969147
https://fast.fonts.net/dv2/14/1db9bec7-f497-4294-8b5a-7bb14cb10bcd.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
15.071999980137
https://fast.fonts.net/dv2/14/1c0840de-f0f0-478a-b326-93eab2f22001.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
15.150999999605
89

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of sciencefriday.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have `[alt]` text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute.
It is advised to not include data elements in tables which are used for layout purposes, as it may create confusion for screen reader and other assistive technology users.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Sciencefriday.com may provide assistance to deaf or hearing-impaired users with captions on videos.
`<video>` elements contain a `<track>` element with `[kind="description"]`
Sciencefriday.com may provide relevant information that dialogue cannot, by using audio descriptions.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
READ MORE
SEGMENT
SEGMENT
ARTICLE
30 Broad Street, Suite 801 New York, NY 10004
Thank you for helping us continue making science fun for everyone.

Navigation

Heading elements are not in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
Failing Elements
Give a dollar for every Friday!

Names and labels

Form elements do not have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Failing Elements
input
input
input

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
71

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that sciencefriday.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids front-end JavaScript libraries with known security vulnerabilities
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids Application Cache
Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
3.5.1
Modernizr
2.8.3
yepnope
FastClick
FlexSlider
WordPress
5.6
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL
http://sciencefriday.com/
Links to cross-origin destinations are unsafe
Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.

Audits

Registers an `unload` listener
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
URL
SHOW DETAILS
Browser errors were logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
URL Description
https://script.crazyegg.com/pages/scripts/0039/4140.js
Failed to load resource: the server responded with a status of 403 (Forbidden)
91

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for sciencefriday.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of sciencefriday.com on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Links do not have descriptive text — 1 link found
Make use of descriptive link text to assist search engines in understanding the content.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
48

Progressive Web App

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of sciencefriday.com. This includes details about web app manifests.

Fast and reliable

Page load is fast enough on mobile networks
Ensure that the page loads fast enough over a cellular network, to ensure good mobile user experience.

PWA Optimized

Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of sciencefriday.com on mobile screens.
Contains some content when JavaScript is not available
Apps should display alternative content for when JavaScript is disabled.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

Fast and reliable

Current page does not respond with a 200 when offline
In order for Progressive Web Apps to be made available offline, ensure that the app is using a service worker.
`start_url` does not respond with a 200 when offline
Consider using a service worker for Progressive Web Apps to ensure greater reliability for the user, in the case of poor network conditions.

Installable

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL
http://sciencefriday.com/
Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Web app manifest does not meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
View Data

PWA Optimized

Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 68
Performance 48
Accessibility 82
Best Practices 71
SEO 90
Progressive Web App 50
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.sciencefriday.com/
Updated: 15th December, 2020

1.98 seconds
First Contentful Paint (FCP)
33%
56%
11%

0.01 seconds
First Input Delay (FID)
95%
4%
1%

Simulate loading on mobile
48

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for sciencefriday.com. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Cumulative Layout Shift — 0.001
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Estimated Input Latency — 40 ms
The time taken for the page to respond to user input (during the busiest 5 second window of page load). Users are likely to perceive sciencefriday.com as laggy when the latency is higher than 0.05 seconds.
Network Requests
Below is a list of network requests that were made during page load.
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http://sciencefriday.com/
0
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Font
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481.12599999877
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Image
https://sciencefriday.disqus.com/count.js
484.94900000514
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application/javascript
Script
https://pixel.wp.com/g.gif?v=ext&j=1%3A9.2.1&blog=165317543&post=23063&tz=-5&srv=www.sciencefriday.com&host=www.sciencefriday.com&ref=&fcp=414&rand=0.8624076752855014
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Image
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2020120801.js
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text/javascript
Script
https://ssl.google-analytics.com/r/__utm.gif?utmwv=5.7.2&utms=1&utmn=680629538&utmhn=www.sciencefriday.com&utmcs=UTF-8&utmsr=360x640&utmvp=360x640&utmsc=24-bit&utmul=en-us&utmje=0&utmfl=-&utmdt=Science%20Friday&utmhid=1537171683&utmr=-&utmp=%2F&utmht=1608056547970&utmac=UA-2828400-1&utmcc=__utma%3D169279779.1044343835.1608056548.1608056548.1608056548.1%3B%2B__utmz%3D169279779.1608056548.1.1.utmcsr%3D(direct)%7Cutmccn%3D(direct)%7Cutmcmd%3D(none)%3B&utmjid=1647862556&utmredir=1&utmu=qAAAAAAAAAAAAAAAAAAAAAAE~
678.25900000753
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text/html
https://www.google-analytics.com/analytics.js
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text/javascript
Script
https://stats.g.doubleclick.net/r/collect?v=1&aip=1&t=dc&_r=3&tid=UA-2828400-1&cid=1044343835.1608056548&jid=1647862556&_v=5.7.2&z=680629538
713.54099997552
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text/html
https://www.google.com/ads/ga-audiences?v=1&aip=1&t=sr&_r=4&tid=UA-2828400-1&cid=1044343835.1608056548&jid=1647862556&_v=5.7.2&z=680629538
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Image
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text/plain
XHR
https://s3.amazonaws.com/scifri-segments/scifri201503132.mp3
857.80900000827
1170.2800000203
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audio/mpeg
Media
https://stats.g.doubleclick.net/j/collect?t=dc&aip=1&_r=3&v=1&_v=j87&tid=UA-2828400-1&cid=1044343835.1608056548&jid=1363616243&gjid=697056342&_gid=2089410551.1608056548&_u=YQBCAEAAAAAAAC~&z=2096404655
860.90099997818
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XHR
https://www.google.com/ads/ga-audiences?t=sr&aip=1&_r=4&slf_rd=1&v=1&_v=j87&tid=UA-2828400-1&cid=1044343835.1608056548&jid=1363616243&_u=YQBCAEAAAAAAAC~&z=735103741
870.345000003
916.56099999091
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42
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image/gif
Image
https://www.sciencefriday.com/wp-content/uploads/2020/12/BestBooks2020Zoom-mainNOTEXT.jpg?w=625&h=450&crop=1
1193.0909999646
1237.4149999814
146162
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image/webp
Image
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
138.611
9.147
239.287
16.142
255.478
55.518
311.014
124.642
442.93
9.289
459.243
24.726
484.102
58.518
557.64
8.104
572.685
11.635
586.974
6.847
597.028
77.273
675.567
33.938
713.201
9.132
730.33
14.075
755.913
21.713
779.567
28.337
807.946
17.412
826.665
34.149
860.835
14.622
877.116
5.071
882.205
6.651
1278.797
5.443
1295.351
7.836
2262.071
8.708
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data

Opportunities

Properly size images
Images can slow down the page's load time. Sciencefriday.com should consider serving more appropriate-sized images.
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Sciencefriday.com should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Sciencefriday.com should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Sciencefriday.com should consider minifying JS files.
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats
Image formats like PNG and JPEG have poor compression when compared to other next-gen formats, such as JPEG 200, JPEG XR and WebP.
Enable text compression — Potential savings of 8 KiB
Text-based resources should be served with compression, such as gzip, deflate or brotli.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://cdn.knightlab.com/libs/soundcite/latest/js/soundcite.min.js?ver=5.6
9847
6872
https://cdn.knightlab.com/libs/soundcite/latest/css/player.css?ver=5.6
2137
1528
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Initial server response time was short — Root document took 20 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.sciencefriday.com/
18.654
Avoid multiple page redirects — Potential savings of 630 ms
Redirects can cause additional delays before the page can begin loading. Sciencefriday.com should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://sciencefriday.com/
630
https://www.sciencefriday.com/
0
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.

Diagnostics

Avoids enormous network payloads — Total size was 714 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://www.sciencefriday.com/wp-content/uploads/2020/12/BestBooks2020Zoom-mainNOTEXT.jpg?w=625&h=450&crop=1
146162
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2020120801.js
100406
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVuqF3v8RnqW2uzaVfS1Ld3dNbt445REGEQODknJMvfSwKkw3VAeupxUcFmntaREyLiV/0PZKKuCcjcEm2OQkk0SXUPSbWZjKfOM7qmMkVAmbFKHC28siSW6eHhb1yS9ggtpRDUA6K+L+pO9zRnzUvoHtbMBiyXo0YBEgVyrrUXUCrDTPI92X+U3YVg3vS0frM0AyuHvLrJR5iewtbhGRhJHRmPgsPkFwmHbMDSvhFXbuNm9dh+b4ahrf1cjoBQfnBWA==
75030
https://www.sciencefriday.com/_static/??-eJx1T9sOgjAM/SFHlRAMD8ZvGaNIdR3LuoXs7x2giYn61p6cKyxekTM2DShgRGAgidDb2TyUpT7okEFitlgxuaoQDlAUZnYRXQRv042crJDXQdDmj/OLHSfkkiKG0BkcAw06b5l7wD9z1mTNROzVOAe1eNAiGPe2BWG1+/4syEm9be4YvS6ruqrepK9/lVz5cmqP56Zt66Z7AruHZV8=
58958
https://www.googletagmanager.com/gtm.js?id=GTM-M89JXQH
33057
https://www.sciencefriday.com/_static/??-eJyVjcEOwiAQRH/IsjYmrR6Mn2JaWHUJLJQFDX8vJph49TSZmcwbeMVBB87IGaIrd2IBQ7IVabH3LR6kSkYPsayONFiBXlx1KJyVlR38QPIDPQqIJmSNt0RmqZ/RE9mE9P1QnvjPpY1uqdh0K5iq6raDLv48TvvDdJrH42zfTYhQIQ==
31314
https://fast.fonts.net/dv2/14/6674200a-eb0b-4457-9340-340059fa9694.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
21940
https://cdn.parsely.com/keys/sciencefriday.com/p.js
21189
https://fast.fonts.net/dv2/14/a7333c48-140e-4bcb-a574-a2dcfcd4a621.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
20522
https://fast.fonts.net/dv2/14/8666e3e0-713e-463a-8bb9-2d3c6b8050b1.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
20264
Avoids an excessive DOM size — 301 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
301
Maximum DOM Depth
SHOW DETAILS
12
Maximum Child Elements
SHOW DETAILS
19
Avoid chaining critical requests — 16 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Sciencefriday.com should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures — 1 user timing
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
Name Type Start Time (Ms) Duration (Ms)
gpt-tag-load
Mark
768.103
Keep request counts low and transfer sizes small — 43 requests • 715 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
43
732052
Script
14
351433
Image
10
162453
Font
8
138987
Stylesheet
4
64242
Document
1
11009
Other
5
3441
Media
1
487
Third-party
29
361280
Minimize third-party usage — Third-party code blocked the main thread for 190 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
SHOW DETAILS
38607
115.204
SHOW DETAILS
21418
50.108
SHOW DETAILS
121901
24.448
SHOW DETAILS
120180
0
SHOW DETAILS
33057
0
SHOW DETAILS
13988
0
SHOW DETAILS
3536
0
SHOW DETAILS
3319
0
SHOW DETAILS
1851
0
SHOW DETAILS
1570
0
SHOW DETAILS
1366
0
SHOW DETAILS
487
0
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
div
Avoid large layout shifts — 3 elements found
Below is a list of all DOM elements that contribute to the CLS of the page.
Element CLS Contribution
Support independent science journalism. Right now all gifts are matched $1 to $…
0.00048641628689236
Double Your Impact
0.00017717149522569
Featured Segment
8.11767578125E-5
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 8 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://www.sciencefriday.com/
1428
249
https://cdn.parsely.com/keys/sciencefriday.com/p.js
7290
234
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVuqF3v8RnqW2uzaVfS1Ld3dNbt445REGEQODknJMvfSwKkw3VAeupxUcFmntaREyLiV/0PZKKuCcjcEm2OQkk0SXUPSbWZjKfOM7qmMkVAmbFKHC28siSW6eHhb1yS9ggtpRDUA6K+L+pO9zRnzUvoHtbMBiyXo0YBEgVyrrUXUCrDTPI92X+U3YVg3vS0frM0AyuHvLrJR5iewtbhGRhJHRmPgsPkFwmHbMDSvhFXbuNm9dh+b4ahrf1cjoBQfnBWA==
7530
155
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2020120801.js
6120
113
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVuqF3v8RnqW2uzaVfS1Ld3dNbt445REGEQODknJMvfSwKkw3VAeupxUcFmntaREyLiV/0PZKKuCcjcEm2OQkk0SXUPSbWZjKfOM7qmMkVAmbFKHC28siSW6eHhb1yS9ggtpRDUA6K+L+pO9zRnzUvoHtbMBiyXo0YBEgVyrrUXUCrDTPI92X+U3YVg3vS0frM0AyuHvLrJR5iewtbhGRhJHRmPgsPkFwmHbMDSvhFXbuNm9dh+b4ahrf1cjoBQfnBWA==
6480
111
https://ssl.google-analytics.com/ga.js
3090
68
https://www.google-analytics.com/analytics.js
4920
68
https://www.sciencefriday.com/_static/??-eJx1T9sOgjAM/SFHlRAMD8ZvGaNIdR3LuoXs7x2giYn61p6cKyxekTM2DShgRGAgidDb2TyUpT7okEFitlgxuaoQDlAUZnYRXQRv042crJDXQdDmj/OLHSfkkiKG0BkcAw06b5l7wD9z1mTNROzVOAe1eNAiGPe2BWG1+/4syEm9be4YvS6ruqrepK9/lVz5cmqP56Zt66Z7AruHZV8=
4290
65
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Avoids large JavaScript libraries with smaller alternatives — 0 large libraries found
It is recommended to work with smaller JavaScript libraries to reduce your bundle size and avoid poor performance.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Metrics

Speed Index — 5.3 s
The time taken for the page contents to be visibly populated.
Time to Interactive — 7.3 s
The time taken for the page to become fully interactive.
Total Blocking Time — 410 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Other

Max Potential First Input Delay — 230 ms
Users could experience a delay when interacting with the page.

Opportunities

Avoid serving legacy JavaScript to modern browsers — Potential savings of 14 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
URL Potential Savings (Bytes)
https://cdn.parsely.com/keys/sciencefriday.com/p.js
7658
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVuqF3v8RnqW2uzaVfS1Ld3dNbt445REGEQODknJMvfSwKkw3VAeupxUcFmntaREyLiV/0PZKKuCcjcEm2OQkk0SXUPSbWZjKfOM7qmMkVAmbFKHC28siSW6eHhb1yS9ggtpRDUA6K+L+pO9zRnzUvoHtbMBiyXo0YBEgVyrrUXUCrDTPI92X+U3YVg3vS0frM0AyuHvLrJR5iewtbhGRhJHRmPgsPkFwmHbMDSvhFXbuNm9dh+b4ahrf1cjoBQfnBWA==
6587

Diagnostics

Serve static assets with an efficient cache policy — 16 resources found
Sciencefriday.com can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://s3.amazonaws.com/scifri-segments/scifri201503132.mp3
0
487
https://srv-2020-12-15-18.pixel.parsely.com/plogger/?rand=1608056547772&plid=20667047&idsite=sciencefriday.com&url=https%3A%2F%2Fwww.sciencefriday.com%2F&urlref=&screen=360x640%7C360x640%7C24&data=%7B%7D&sid=1&surl=https%3A%2F%2Fwww.sciencefriday.com%2F&sref=&sts=1608056547765&slts=0&title=Science+Friday&date=Tue+Dec+15+2020+10%3A22%3A27+GMT-0800+(Pacific+Standard+Time)&action=pageview&pvid=96868773&u=pid%3D26fae3d2c95f4f2ea7ff2e8822d3ae03
0
229
https://sciencefriday.disqus.com/count.js
300000
1570
https://www.google-analytics.com/analytics.js
7200000
19452
https://ssl.google-analytics.com/ga.js
7200000
17803
https://cdn.knightlab.com/libs/soundcite/latest/js/soundcite.min.js?ver=5.6
14400000
10856
https://cdn.knightlab.com/libs/soundcite/latest/css/player.css?ver=5.6
14400000
3132
https://cdn.parsely.com/keys/sciencefriday.com/p.js
86400000
21189
https://fast.fonts.net/cssapi/3f63d129-3acd-4f74-b7b4-759653645f9d.css
604800000
1817
https://www.sciencefriday.com/wp-content/uploads/2020/12/BestBooks2020Zoom-mainNOTEXT.jpg?w=625&h=450&crop=1
2592000000
146162
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7776000000
21940
https://fast.fonts.net/dv2/14/a7333c48-140e-4bcb-a574-a2dcfcd4a621.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
7776000000
20522
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7776000000
20264
https://fast.fonts.net/dv2/14/248477c6-2bfb-4740-a310-f92866a57402.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
7776000000
20015
https://fast.fonts.net/dv2/14/1db9bec7-f497-4294-8b5a-7bb14cb10bcd.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
7776000000
19948
https://fast.fonts.net/dv2/14/1c0840de-f0f0-478a-b326-93eab2f22001.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
7776000000
15339
Reduce JavaScript execution time — 1.3 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.sciencefriday.com/
1591.756
23.748
11.296
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVuqF3v8RnqW2uzaVfS1Ld3dNbt445REGEQODknJMvfSwKkw3VAeupxUcFmntaREyLiV/0PZKKuCcjcEm2OQkk0SXUPSbWZjKfOM7qmMkVAmbFKHC28siSW6eHhb1yS9ggtpRDUA6K+L+pO9zRnzUvoHtbMBiyXo0YBEgVyrrUXUCrDTPI92X+U3YVg3vS0frM0AyuHvLrJR5iewtbhGRhJHRmPgsPkFwmHbMDSvhFXbuNm9dh+b4ahrf1cjoBQfnBWA==
868.644
566.772
16.772
Unattributable
334.3
4.48
0.66
https://www.google-analytics.com/analytics.js
152.256
103.876
5.72
https://cdn.parsely.com/keys/sciencefriday.com/p.js
145.94
135.572
4.864
https://ssl.google-analytics.com/ga.js
136.648
124.916
5.768
https://www.sciencefriday.com/_static/??-eJyVjcEOwiAQRH/IsjYmrR6Mn2JaWHUJLJQFDX8vJph49TSZmcwbeMVBB87IGaIrd2IBQ7IVabH3LR6kSkYPsayONFiBXlx1KJyVlR38QPIDPQqIJmSNt0RmqZ/RE9mE9P1QnvjPpY1uqdh0K5iq6raDLv48TvvDdJrH42zfTYhQIQ==
132.84
98.3
7.292
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2020120801.js
115.42
77.42
31.656
https://www.googletagmanager.com/gtm.js?id=GTM-M89JXQH
71.26
59.96
7.788
https://www.sciencefriday.com/_static/??-eJx1T9sOgjAM/SFHlRAMD8ZvGaNIdR3LuoXs7x2giYn61p6cKyxekTM2DShgRGAgidDb2TyUpT7okEFitlgxuaoQDlAUZnYRXQRv042crJDXQdDmj/OLHSfkkiKG0BkcAw06b5l7wD9z1mTNROzVOAe1eNAiGPe2BWG1+/4syEm9be4YvS6ruqrepK9/lVz5cmqP56Zt66Z7AruHZV8=
64.568
0
0
https://cdn.knightlab.com/libs/soundcite/latest/js/soundcite.min.js?ver=5.6
50.396
41.296
2.684
Minimize main-thread work — 3.8 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Script Evaluation
1300.86
Style & Layout
985.024
Other
776.552
Rendering
474.884
Parse HTML & CSS
111.928
Script Parsing & Compilation
111.88

Metrics

First Contentful Paint — 4.0 s
The time taken for the first image or text on the page to be rendered.
Largest Contentful Paint — 7.6 s
The timing of the largest text or image that is painted.

Other

First CPU Idle — 6.9 s
The time taken for the page's main thread to be quiet enough to handle input.
First Meaningful Paint — 5.2 s
The time taken for the primary content of the page to be rendered.
First Contentful Paint (3G) — 8070 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.

Opportunities

Eliminate render-blocking resources — Potential savings of 2,360 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Sciencefriday.com should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://fast.fonts.net/cssapi/3f63d129-3acd-4f74-b7b4-759653645f9d.css
1817
780
https://www.sciencefriday.com/_static/??-eJx1T9sOgjAM/SFHlRAMD8ZvGaNIdR3LuoXs7x2giYn61p6cKyxekTM2DShgRGAgidDb2TyUpT7okEFitlgxuaoQDlAUZnYRXQRv042crJDXQdDmj/OLHSfkkiKG0BkcAw06b5l7wD9z1mTNROzVOAe1eNAiGPe2BWG1+/4syEm9be4YvS6ruqrepK9/lVz5cmqP56Zt66Z7AruHZV8=
58958
1830
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVuqF3v8RnqW2uzaVfS1Ld3dNbt445REGEQODknJMvfSwKkw3VAeupxUcFmntaREyLiV/0PZKKuCcjcEm2OQkk0SXUPSbWZjKfOM7qmMkVAmbFKHC28siSW6eHhb1yS9ggtpRDUA6K+L+pO9zRnzUvoHtbMBiyXo0YBEgVyrrUXUCrDTPI92X+U3YVg3vS0frM0AyuHvLrJR5iewtbhGRhJHRmPgsPkFwmHbMDSvhFXbuNm9dh+b4ahrf1cjoBQfnBWA==
75030
2430
https://cdn.knightlab.com/libs/soundcite/latest/css/player.css?ver=5.6
3132
780
Remove unused CSS — Potential savings of 52 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Sciencefriday.com should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.sciencefriday.com/_static/??-eJx1T9sOgjAM/SFHlRAMD8ZvGaNIdR3LuoXs7x2giYn61p6cKyxekTM2DShgRGAgidDb2TyUpT7okEFitlgxuaoQDlAUZnYRXQRv042crJDXQdDmj/OLHSfkkiKG0BkcAw06b5l7wD9z1mTNROzVOAe1eNAiGPe2BWG1+/4syEm9be4YvS6ruqrepK9/lVz5cmqP56Zt66Z7AruHZV8=
58958
53604
Remove unused JavaScript — Potential savings of 124 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://securepubads.g.doubleclick.net/gpt/pubads_impl_2020120801.js
100406
80342
https://www.sciencefriday.com/_static/??-eJylUe1qQjEMfaHVuqF3v8RnqW2uzaVfS1Ld3dNbt445REGEQODknJMvfSwKkw3VAeupxUcFmntaREyLiV/0PZKKuCcjcEm2OQkk0SXUPSbWZjKfOM7qmMkVAmbFKHC28siSW6eHhb1yS9ggtpRDUA6K+L+pO9zRnzUvoHtbMBiyXo0YBEgVyrrUXUCrDTPI92X+U3YVg3vS0frM0AyuHvLrJR5iewtbhGRhJHRmPgsPkFwmHbMDSvhFXbuNm9dh+b4ahrf1cjoBQfnBWA==
75030
47093
Preload key requests — Potential savings of 3,330 ms
Key requests can be preloaded by using '<link rel=preload>'. Sciencefriday.com should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
URL Potential Savings (Ms)
https://www.sciencefriday.com/wp-content/themes/sciencefriday/fonts/scifri/scifri-icons.woff
3330
https://www.sciencefriday.com/wp-content/themes/sciencefriday/fonts/genericons/genericons-regular-webfont.ttf
3180

Diagnostics

Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
URL Potential Savings (Ms)
https://www.sciencefriday.com/wp-content/themes/sciencefriday/fonts/scifri/scifri-icons.woff
16.308000020217
https://fast.fonts.net/dv2/14/8666e3e0-713e-463a-8bb9-2d3c6b8050b1.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
15.561999985948
https://fast.fonts.net/dv2/14/a7333c48-140e-4bcb-a574-a2dcfcd4a621.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
53.424999990966
https://www.sciencefriday.com/wp-content/themes/sciencefriday/fonts/genericons/genericons-regular-webfont.ttf
15.969000000041
https://fast.fonts.net/dv2/14/248477c6-2bfb-4740-a310-f92866a57402.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
16.851000022143
https://fast.fonts.net/dv2/14/6674200a-eb0b-4457-9340-340059fa9694.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
15.743999974802
https://fast.fonts.net/dv2/14/1db9bec7-f497-4294-8b5a-7bb14cb10bcd.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
53.2050000038
https://fast.fonts.net/dv2/14/1c0840de-f0f0-478a-b326-93eab2f22001.woff2?d44f19a684109620e484157ba690e818fd88d46835f0598fdbde91b6761c1740898ab9bc107391a8e54a4e9ebf2a6a03a6170cbc784bd4cbfc5964fbdf31b2cfde2e9cb73c8c542a3eb04d711856216b583817137e21d0c884d312a9eb89f5b0c9e29d9a493f8466ad8cdef1bf6235ef836d14b9355c2358c3&projectId=3f63d129-3acd-4f74-b7b4-759653645f9d
15.460999973584
82

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of sciencefriday.com. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute.
It is advised to not include data elements in tables which are used for layout purposes, as it may create confusion for screen reader and other assistive technology users.
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Use proper list structure to aid screen readers and other assistive technologies.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
In order for screen readers to announce list items, ensure that list items ('<li>') are contained within parent '<ul>' or '<ol>' tags.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Names and labels

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
`<frame>` or `<iframe>` elements have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have `[alt]` text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Internationalization and localization

`<html>` element has a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Sciencefriday.com may provide assistance to deaf or hearing-impaired users with captions on videos.
`<video>` elements contain a `<track>` element with `[kind="description"]`
Sciencefriday.com may provide relevant information that dialogue cannot, by using audio descriptions.

Names and labels

Buttons do not have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Failing Elements
button
Form elements do not have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Failing Elements
input
input

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
READ MORE
SEGMENT
SEGMENT
ARTICLE
30 Broad Street, Suite 801 New York, NY 10004
Thank you for helping us continue making science fun for everyone.

Navigation

Heading elements are not in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
Failing Elements
Give a dollar for every Friday!

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
71

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that sciencefriday.com should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids front-end JavaScript libraries with known security vulnerabilities
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids Application Cache
Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
3.5.1
Modernizr
2.8.3
yepnope
FastClick
FlexSlider
WordPress
5.6
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL
http://sciencefriday.com/
Links to cross-origin destinations are unsafe
Improve performance and prevent security vulnerabilities by adding rel="noopener" and rel="noreferrer" to external links.

Audits

Registers an `unload` listener
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
URL
SHOW DETAILS
Browser errors were logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
URL Description
https://script.crazyegg.com/pages/scripts/0039/4140.js
Failed to load resource: the server responded with a status of 403 (Forbidden)
90

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for sciencefriday.com. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of sciencefriday.com on mobile screens.
Document uses legible font sizes — 100% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
SHOW DETAILS
100.00%
≥ 12px

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Document has a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Links are crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Mobile Friendly

Tap targets are not sized appropriately — 82% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.
Tap Target Size Overlapping Target
a
75x45
a
a
75x45
a
a
75x45
a
The Best Science Books Of 2020
79x26
a
SEGMENT
70x24
The Best Science Books Of 2020
SEGMENT
70x24
Trump Administration Rushes To Sell Arctic National Wildlife Refuge Land For Dr…
ARTICLE
61x24
A Tale Of Two Glassworkers And Their Marine Marvels
DONATE NOW
313x36
a

Content Best Practices

Links do not have descriptive text — 1 link found
Make use of descriptive link text to assist search engines in understanding the content.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
50

Progressive Web App

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of sciencefriday.com. This includes details about web app manifests.

Fast and reliable

Page load is fast enough on mobile networks
Ensure that the page loads fast enough over a cellular network, to ensure good mobile user experience.

PWA Optimized

Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of sciencefriday.com on mobile screens.
Contains some content when JavaScript is not available
Apps should display alternative content for when JavaScript is disabled.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

Fast and reliable

Current page does not respond with a 200 when offline
In order for Progressive Web Apps to be made available offline, ensure that the app is using a service worker.
`start_url` does not respond with a 200 when offline
Consider using a service worker for Progressive Web Apps to ensure greater reliability for the user, in the case of poor network conditions.

Installable

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL
http://sciencefriday.com/
Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Web app manifest does not meet the installability requirements
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
View Data

PWA Optimized

Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 192.0.66.112
Continent: North America
Country: United States
United States Flag
Region:
City:
Longitude: -97.822
Latitude: 37.751
Currencies: USD
USN
USS
Languages: English

Web Hosting Provider

Name IP Address
Automattic, Inc
Registration

Domain Registrant

Private Registration: No
Name:
Organization:
Country:
City:
State:
Post Code:
Email:
Phone:
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Name IP Address
GoDaddy.com, LLC 23.13.154.6
Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating:
WOT Rating: 4.6/5 (4 reviews)
WOT Trustworthiness: 92/100
WOT Child Safety: 93/100
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: sciencefriday.com
Issued By: Let's Encrypt Authority X3
Valid From: 3rd November, 2020
Valid To: 1st February, 2021
Subject: CN = sciencefriday.com
Hash: bc5a0822
Issuer: CN = Let's Encrypt Authority X3
O = Let's Encrypt
S = US
Version: 2
Serial Number: 0x03B29C282AA4D1233565F8D9BACFCD1D5555
Serial Number (Hex): 03B29C282AA4D1233565F8D9BACFCD1D5555
Valid From: 3rd November, 2024
Valid To: 1st February, 2024
Signature Algorithm (Short Name): RSA-SHA256
Signature Algorithm (Long Name): sha256WithRSAEncryption
Authority Key Identifier: keyid:A8:4A:6A:63:04:7D:DD:BA:E6:D1:39:B7:A6:45:65:EF:F3:A8:EC:A1
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
Certificate Policies: Policy: 2.23.140.1.2.1
Policy: 1.3.6.1.4.1.44947.1.1.1
CPS: http://cps.letsencrypt.org
Authority Information Access: OCSP - URI:http://ocsp.int-x3.letsencrypt.org
CA Issuers - URI:http://cert.int-x3.letsencrypt.org/
SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 6F:53:76:AC:31:F0:31:19:D8:99:00:A4:51:15:FF:77:
15:1C:11:D9:02:C1:00:29:06:8D:B2:08:9A:37:D9:13
Timestamp : Nov 3 11:09:07.405 2020 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:20:64:96:8C:06:BD:B2:25:C3:5F:53:A3:67:
7D:36:D9:50:FC:97:D9:DC:15:45:CB:CA:5A:0E:5F:64:
A0:33:B6:AB:02:21:00:C1:7B:43:BB:87:5F:2E:BC:3A:
D0:47:AB:74:2E:00:5B:6D:86:04:5C:DC:E3:B1:3A:CB:
D5:D4:BA:DB:25:7A:6D
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : F6:5C:94:2F:D1:77:30:22:14:54:18:08:30:94:56:8E:
E3:4D:13:19:33:BF:DF:0C:2F:20:0B:CC:4E:F1:64:E3
Timestamp : Nov 3 11:09:07.396 2020 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:46:02:21:00:B3:90:D9:3A:AB:73:8C:13:BE:A7:92:
71:CB:E7:EC:1C:E5:7E:B0:D4:5F:7F:86:55:41:BD:BE:
5B:DE:A4:A5:3A:02:21:00:A4:AB:73:AD:3F:36:9B:56:
5D:BC:7A:EF:20:56:18:29:7B:F2:A3:F4:3B:86:49:09:
69:C9:42:ED:F0:AF:16:2B
Key Usage: Digital Signature, Key Encipherment
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:www.sciencefriday.com
DNS:sciencefriday.com
Technical

DNS Lookup

HTTP Response Headers

HTTP-Code: HTTP/1.1 200 OK
Server: nginx
Date: 15th December, 2020
Content-Type: text/html; charset=UTF-8
Cache-Control: max-age=300, must-revalidate
Content-Length: 38300
Connection: keep-alive
X-hacker: If you're reading this, you should visit wpvip.com/careers and apply to join the fun, mention this header.
X-Powered-By: WordPress VIP <https://wpvip.com>
Host-Header: a9130478a60e5f9135f765b23f26593b
Link: <https://www.sciencefriday.com/>; rel=shortlink
X-rq: ewr3 102 237 3100
Age: 1234
X-Cache: hit
Vary: Accept-Encoding
Accept-Ranges: bytes

Whois Lookup

Created: 21st February, 1996
Changed: 2nd March, 2018
Expires: 22nd February, 2028
Registrar: GoDaddy.com, LLC
Status: clientTransferProhibited
clientUpdateProhibited
clientRenewProhibited
clientDeleteProhibited
Nameservers: dorthy.ns.cloudflare.com
rick.ns.cloudflare.com
Owner Organization: Science Friday
Owner State: NY
Owner Country: US
Owner Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SCIENCEFRIDAY.COM
Admin Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SCIENCEFRIDAY.COM
Tech Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SCIENCEFRIDAY.COM
Full Whois: Domain Name: SCIENCEFRIDAY.COM
Registry Domain ID: 283536_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.godaddy.com
Registrar URL: http://www.godaddy.com
Updated Date: 2018-03-02T14:55:12Z
Creation Date: 1996-02-21T05:00:00Z
Registrar Registration Expiration Date: 2028-02-22T05:00:00Z
Registrar: GoDaddy.com, LLC
Registrar IANA ID: 146
Registrar Abuse Contact Email: abuse@godaddy.com
Registrar Abuse Contact Phone: +1.4806242505
Domain Status: clientTransferProhibited http://www.icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited http://www.icann.org/epp#clientUpdateProhibited
Domain Status: clientRenewProhibited http://www.icann.org/epp#clientRenewProhibited
Domain Status: clientDeleteProhibited http://www.icann.org/epp#clientDeleteProhibited
Registrant Organization: Science Friday
Registrant State/Province: NY
Registrant Country: US
Registrant Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SCIENCEFRIDAY.COM
Admin Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SCIENCEFRIDAY.COM
Tech Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=SCIENCEFRIDAY.COM
Name Server: DORTHY.NS.CLOUDFLARE.COM
Name Server: RICK.NS.CLOUDFLARE.COM
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/
>>> Last update of WHOIS database: 2020-12-15T18:00:00Z <<<

For more information on Whois status codes, please visit https://www.icann.org/resources/pages/epp-status-codes-2014-06-16-en

TERMS OF USE: The data contained in this registrar's Whois database, while believed by the
registrar to be reliable, is provided "as is" with no guarantee or warranties regarding its
accuracy. This information is provided for the sole purpose of assisting you in obtaining
information about domain name registration records. Any use of this data for any other purpose
is expressly forbidden without the prior written permission of this registrar. By submitting
an inquiry, you agree to these terms and limitations of warranty. In particular, you agree not
to use this data to allow, enable, or otherwise support the dissemination or collection of this
data, in part or in its entirety, for any purpose, such as transmission by e-mail, telephone,
postal mail, facsimile or other means of mass unsolicited, commercial advertising or solicitations
of any kind, including spam. You further agree not to use this data to enable high volume, automated
or robotic electronic processes designed to collect or compile this data for any purpose, including
mining this data for your own personal or commercial purposes. Failure to comply with these terms
may result in termination of access to the Whois database. These terms may be subject to modification
at any time without notice.
View Raw Whois

Nameservers

Name IP Address
dorthy.ns.cloudflare.com 172.64.32.249
rick.ns.cloudflare.com 172.64.33.139
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