Tools & Wizards About Us
sciencebulletins.amnh.org screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 62% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

sciencebulletins.amnh.org

Science Videos | American Museum of Natural History

Page Load Speed

4.4 sec in total

First Response

103 ms

Resources Loaded

3.2 sec

Page Rendered

1 sec

sciencebulletins.amnh.org screenshot

About Website

Welcome to sciencebulletins.amnh.org homepage info - get ready to check Science Bulletins Amnh best content for United States right away, or after learning these important things about sciencebulletins.amnh.org

Over 700 original science news videos. Featuring series on scientists in the field, behind-the-scenes tours, new research, and more.

Visit sciencebulletins.amnh.org

Key Findings

We analyzed Sciencebulletins.amnh.org page load time and found that the first response time was 103 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

sciencebulletins.amnh.org performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value9.0 s

14/100

10%

TBT (Total Blocking Time)

Value5,990 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value15.5 s

7/100

10%

Network Requests Diagram

videos

103 ms

gtm.js

447 ms

488794743153594d558c30db374f6f69_1663863872_all.css

63 ms

lazysizes_with_bg.min.js

187 ms

email-decode.min.js

266 ms

Our browser made a total of 86 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Sciencebulletins.amnh.org, 13% (11 requests) were made to Youtube.com and 7% (6 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Tag.simpli.fi.

Page Optimization Overview & Recommendations

Page size can be reduced by 650.4 kB (73%)

Content Size

892.0 kB

After Optimization

241.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sciencebulletins.amnh.org main page is 892.0 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 85% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. CSS take 368.5 kB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 314.4 kB

  • Original 340.6 kB
  • After minification 129.7 kB
  • After compression 26.2 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 210.9 kB, which is 62% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 314.4 kB or 92% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 82.3 kB
  • After minification 82.3 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Science Bulletins Amnh images are well optimized though.

JavaScript Optimization

-24%

Potential reduce by 24.6 kB

  • Original 100.6 kB
  • After minification 100.6 kB
  • After compression 76.0 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 24.6 kB or 24% of the original size.

CSS Optimization

-85%

Potential reduce by 311.4 kB

  • Original 368.5 kB
  • After minification 368.3 kB
  • After compression 57.0 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Sciencebulletins.amnh.org needs all CSS files to be minified and compressed as it can save up to 311.4 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 47 (70%)

Requests Now

67

After Optimization

20

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Science Bulletins Amnh. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 30 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

videos

videos

103 ms

gtm.js

gtm.js

447 ms

488794743153594d558c30db374f6f69_1663863872_all.css

488794743153594d558c30db374f6f69_1663863872_all.css

63 ms

lazysizes_with_bg.min.js

lazysizes_with_bg.min.js

187 ms

email-decode.min.js

email-decode.min.js

266 ms

9cc27c286297cf0b409f4d80c7957b58_1661443730.js

9cc27c286297cf0b409f4d80c7957b58_1661443730.js

426 ms

5ebfb9ee6a65a35ddcaa2cf2c9ecd690_1648138514.js

5ebfb9ee6a65a35ddcaa2cf2c9ecd690_1648138514.js

426 ms

ls.respimg.min.js

ls.respimg.min.js

257 ms

OIjAR3f9c60

OIjAR3f9c60

709 ms

amnh-logo-icon__black.svg

amnh-logo-icon__black.svg

654 ms

amnh-logo-text__black.svg

amnh-logo-text__black.svg

645 ms

search_blue.svg

search_blue.svg

653 ms

search_black.svg

search_black.svg

652 ms

share_blue.svg

share_blue.svg

653 ms

share_black.svg

share_black.svg

661 ms

google-classroom_white.svg

google-classroom_white.svg

664 ms

bookmark_blue.svg

bookmark_blue.svg

658 ms

bookmark_black.svg

bookmark_black.svg

654 ms

plus_blue.svg

plus_blue.svg

659 ms

plus_black.svg

plus_black.svg

655 ms

carat-right_blue.svg

carat-right_blue.svg

662 ms

carat-right_black.svg

carat-right_black.svg

667 ms

play_white.svg

play_white.svg

664 ms

sofiapro-regular-webfont.woff

sofiapro-regular-webfont.woff

504 ms

sofiapro-medium-webfont.woff

sofiapro-medium-webfont.woff

502 ms

sofiapro-light-webfont.woff

sofiapro-light-webfont.woff

504 ms

sofiapro-semibold-webfont.woff

sofiapro-semibold-webfont.woff

505 ms

GT-Sectra-Book.woff

GT-Sectra-Book.woff

504 ms

GT-Sectra-Regular.woff

GT-Sectra-Regular.woff

506 ms

GT-Sectra-Medium.woff

GT-Sectra-Medium.woff

507 ms

fa-brands-400.woff

fa-brands-400.woff

509 ms

fa-solid-900.woff

fa-solid-900.woff

507 ms

fa-regular-400.woff

fa-regular-400.woff

508 ms

sofiapro-lightit-webfont.woff

sofiapro-lightit-webfont.woff

509 ms

sofiapro-regularit-webfont.woff

sofiapro-regularit-webfont.woff

510 ms

sofiapro-mediumit-webfont.woff

sofiapro-mediumit-webfont.woff

510 ms

sofiapro-semiboldit-webfont.woff

sofiapro-semiboldit-webfont.woff

511 ms

enforce

enforce

888 ms

www-player.css

www-player.css

510 ms

www-embed-player.js

www-embed-player.js

949 ms

base.js

base.js

1032 ms

fetch-polyfill.js

fetch-polyfill.js

552 ms

voices-of-the-native-nwc-video-listing-image-1600x1200_full_285.jpg

voices-of-the-native-nwc-video-listing-image-1600x1200_full_285.jpg

266 ms

optimize.js

optimize.js

747 ms

conversion_async.js

conversion_async.js

814 ms

hotjar-2608065.js

hotjar-2608065.js

767 ms

fbevents.js

fbevents.js

743 ms

consenTag.js

consenTag.js

844 ms

c7e3b9a0-b847-013a-5093-0cc47a8ffaac

c7e3b9a0-b847-013a-5093-0cc47a8ffaac

1125 ms

js

js

264 ms

knight-mosasaur-hunting-1900-1500_full_285.jpg

knight-mosasaur-hunting-1900-1500_full_285.jpg

404 ms

extinct-and-endangered-listing-thumbnail-2880x2160_full_285.jpg

extinct-and-endangered-listing-thumbnail-2880x2160_full_285.jpg

405 ms

activityi;src=9432320;type=visit;cat=amnh-0;ord=1;num=1685103406943;gtm=2wg9s0;auiddc=1216213506.1664837118;~oref=https%3A%2F%2Fwww.amnh.org%2Fexplore%2Fvideos

activityi;src=9432320;type=visit;cat=amnh-0;ord=1;num=1685103406943;gtm=2wg9s0;auiddc=1216213506.1664837118;~oref=https%3A%2F%2Fwww.amnh.org%2Fexplore%2Fvideos

748 ms

carat-left_black.svg

carat-left_black.svg

331 ms

carat-left_blue.svg

carat-left_blue.svg

330 ms

iframe_api

iframe_api

316 ms

2022-asimov-debate-space-pollution-listing-1200x900_full_285.jpg

2022-asimov-debate-space-pollution-listing-1200x900_full_285.jpg

111 ms

rock-gem-crystal-1900-1500_full_285.jpg

rock-gem-crystal-1900-1500_full_285.jpg

111 ms

earth-day-2022-1900-1500_full_285.jpg

earth-day-2022-1900-1500_full_285.jpg

110 ms

OIjAR3f9c60

OIjAR3f9c60

110 ms

analytics.js

analytics.js

105 ms

modules.61e17720cf639c3e96a7.js

modules.61e17720cf639c3e96a7.js

212 ms

344984802502887

344984802502887

78 ms

src=9432320;type=visit;cat=amnh-0;ord=1;num=1685103406943;gtm=2wg9s0;auiddc=1216213506.1664837118;~oref=https%3A%2F%2Fwww.amnh.org%2Fexplore%2Fvideos

src=9432320;type=visit;cat=amnh-0;ord=1;num=1685103406943;gtm=2wg9s0;auiddc=1216213506.1664837118;~oref=https%3A%2F%2Fwww.amnh.org%2Fexplore%2Fvideos

153 ms

base.js

base.js

337 ms

fetch-polyfill.js

fetch-polyfill.js

53 ms

704 ms

736 ms

97 ms

www-widgetapi.js

www-widgetapi.js

121 ms

918 ms

box-69edcc3187336f9b0a3fbb4c73be9fe6.html

box-69edcc3187336f9b0a3fbb4c73be9fe6.html

525 ms

collect

collect

83 ms

collect

collect

690 ms

popup_silent.html

popup_silent.html

403 ms

ad_status.js

ad_status.js

378 ms

VM1LbcxuQZ7urdjSm15-Kft2IdlldgxYJTjOL3p1Mjw.js

VM1LbcxuQZ7urdjSm15-Kft2IdlldgxYJTjOL3p1Mjw.js

112 ms

embed.js

embed.js

57 ms

jquery.min.js

jquery.min.js

236 ms

mustache.min.js

mustache.min.js

252 ms

187 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

222 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

228 ms

ga-audiences

ga-audiences

195 ms

193 ms

id

id

173 ms

Accessibility Review

sciencebulletins.amnh.org accessibility score

86

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

sciencebulletins.amnh.org best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

sciencebulletins.amnh.org SEO score

98

Search Engine Optimization Advices

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sciencebulletins.amnh.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Sciencebulletins.amnh.org main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

sciencebulletins.amnh.org

Open Graph data is detected on the main page of Science Bulletins Amnh. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: