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saylor.org screenshot

Report Summary

  • 11

    Performance

    Renders faster than
    24% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

saylor.org

Saylor Academy

Page Load Speed

2.9 sec in total

First Response

621 ms

Resources Loaded

2.1 sec

Page Rendered

223 ms

saylor.org screenshot

About Website

Click here to check amazing Saylor content for United States. Otherwise, check out these important facts you probably never knew about saylor.org

Learn new skills, earn credit toward a degree, or advance your career at your own pace with free Saylor Academy courses!

Visit saylor.org

Key Findings

We analyzed Saylor.org page load time and found that the first response time was 621 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

saylor.org performance score

11

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value6.5 s

9/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value8,040 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.657

8/100

15%

TTI (Time to Interactive)

Value16.5 s

5/100

10%

Network Requests Diagram

www.saylor.org

621 ms

wp-emoji-release.min.js

12 ms

prettyPhoto.css

16 ms

wp-video-lightbox.css

14 ms

layerslider.css

16 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 73% of them (66 requests) were addressed to the original Saylor.org, 11% (10 requests) were made to Fonts.gstatic.com and 4% (4 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (621 ms) belongs to the original domain Saylor.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.2 MB (73%)

Content Size

3.0 MB

After Optimization

826.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Saylor.org main page is 3.0 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% 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. Javascripts take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 135.3 kB

  • Original 175.5 kB
  • After minification 171.8 kB
  • After compression 40.1 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 135.3 kB or 77% of the original size.

Image Optimization

-6%

Potential reduce by 4.7 kB

  • Original 83.8 kB
  • After minification 79.0 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. Saylor images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 1.7 MB

  • Original 2.3 MB
  • After minification 2.2 MB
  • After compression 642.0 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 1.7 MB or 72% of the original size.

CSS Optimization

-86%

Potential reduce by 403.2 kB

  • Original 468.1 kB
  • After minification 369.0 kB
  • After compression 64.9 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. Saylor.org needs all CSS files to be minified and compressed as it can save up to 403.2 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 64 (80%)

Requests Now

80

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 80 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Saylor. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 36 to 1 for JavaScripts and from 24 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.saylor.org

www.saylor.org

621 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

12 ms

prettyPhoto.css

prettyPhoto.css

16 ms

wp-video-lightbox.css

wp-video-lightbox.css

14 ms

layerslider.css

layerslider.css

16 ms

layerslider.custom.css

layerslider.custom.css

17 ms

css

css

33 ms

styles.css

styles.css

17 ms

nivo-lightbox.css

nivo-lightbox.css

21 ms

default.css

default.css

18 ms

fontello.css

fontello.css

22 ms

animation.css

animation.css

18 ms

fontello-ie7.css

fontello-ie7.css

25 ms

pagenavi-css.css

pagenavi-css.css

22 ms

css

css

48 ms

www.saylor.org

www.saylor.org

259 ms

bootstrap.css

bootstrap.css

24 ms

stmenu.css

stmenu.css

36 ms

jquery-ui-1.7.3.custom.css

jquery-ui-1.7.3.custom.css

33 ms

style.css

style.css

30 ms

sttoolkit.css

sttoolkit.css

36 ms

magnific-popup.css

magnific-popup.css

40 ms

custom.css

custom.css

37 ms

jquery.js

jquery.js

40 ms

jquery-migrate.min.js

jquery-migrate.min.js

41 ms

jquery.prettyPhoto.js

jquery.prettyPhoto.js

40 ms

video-lightbox.js

video-lightbox.js

41 ms

layerslider.kreaturamedia.jquery.js

layerslider.kreaturamedia.jquery.js

42 ms

greensock.js

greensock.js

40 ms

layerslider.transitions.js

layerslider.transitions.js

42 ms

css

css

44 ms

saylor4.js

saylor4.js

41 ms

jquery.fancybox-1.3.4.pack.js

jquery.fancybox-1.3.4.pack.js

44 ms

jquery.fancybox-1.3.4.css

jquery.fancybox-1.3.4.css

67 ms

jquery.cycle.all.js

jquery.cycle.all.js

45 ms

addthis_widget.js

addthis_widget.js

15 ms

wpaudio.min.js

wpaudio.min.js

47 ms

jquery.form.min.js

jquery.form.min.js

51 ms

scripts.js

scripts.js

48 ms

js

js

58 ms

nivo-lightbox.min.js

nivo-lightbox.min.js

51 ms

script.js

script.js

48 ms

bootstrap.js

bootstrap.js

48 ms

core.min.js

core.min.js

49 ms

datepicker.min.js

datepicker.min.js

49 ms

toolkit.min.js

toolkit.min.js

72 ms

st-user.js

st-user.js

53 ms

underscore.min.js

underscore.min.js

57 ms

shortcode.min.js

shortcode.min.js

54 ms

stmenu.js

stmenu.js

57 ms

ddsmoothmenu.js

ddsmoothmenu.js

57 ms

custom.js

custom.js

68 ms

comment-reply.min.js

comment-reply.min.js

61 ms

wp-embed.min.js

wp-embed.min.js

53 ms

saylor-academy-white.svg

saylor-academy-white.svg

29 ms

banner-OER-150x150.jpg

banner-OER-150x150.jpg

29 ms

banner-us-capitol-150x150.jpg

banner-us-capitol-150x150.jpg

30 ms

Coding-vs-Theory-150x150.jpg

Coding-vs-Theory-150x150.jpg

28 ms

banner-technical-writing-e1453309076914-150x150.jpg

banner-technical-writing-e1453309076914-150x150.jpg

238 ms

logo_sayloracademy_white_square-03.png

logo_sayloracademy_white_square-03.png

30 ms

courses-number-bg.jpg

courses-number-bg.jpg

214 ms

my-courses-bg.jpg

my-courses-bg.jpg

210 ms

why-saylor-bg.jpg

why-saylor-bg.jpg

213 ms

footer-icon-fb.png

footer-icon-fb.png

213 ms

footer-icon-twitter.png

footer-icon-twitter.png

213 ms

footer-icon-gplus.png

footer-icon-gplus.png

213 ms

v0SdcGFAl2aezM9Vq_aFTQ.ttf

v0SdcGFAl2aezM9Vq_aFTQ.ttf

304 ms

4GwpJM7qx9X5Obd9KsnKxQ.ttf

4GwpJM7qx9X5Obd9KsnKxQ.ttf

352 ms

nj47mAZe0mYUIySgfn0wpQ.ttf

nj47mAZe0mYUIySgfn0wpQ.ttf

348 ms

BTu4SsVveqk58cdYjlaM9g.ttf

BTu4SsVveqk58cdYjlaM9g.ttf

349 ms

zJY4gsxBiSo5L7tNutxFNg.ttf

zJY4gsxBiSo5L7tNutxFNg.ttf

304 ms

vDvcuXwZxUMLuTfuLrSLpA.ttf

vDvcuXwZxUMLuTfuLrSLpA.ttf

350 ms

DvlFBScY1r-FMtZSYIYoYw.ttf

DvlFBScY1r-FMtZSYIYoYw.ttf

349 ms

zpv3sOKAbMf4wff105oLjw.ttf

zpv3sOKAbMf4wff105oLjw.ttf

351 ms

4cKlrioa77J2iqTqBgkRWg.ttf

4cKlrioa77J2iqTqBgkRWg.ttf

381 ms

5pEc4QKTMA2oB4Hi9NkS4w.ttf

5pEc4QKTMA2oB4Hi9NkS4w.ttf

351 ms

websymbols-regular-webfont.woff

websymbols-regular-webfont.woff

282 ms

main.js

main.js

583 ms

analytics.js

analytics.js

245 ms

skin.css

skin.css

104 ms

soundmanager2-nodebug-jsmin.js

soundmanager2-nodebug-jsmin.js

113 ms

wpaudio-play.png

wpaudio-play.png

101 ms

80x15.png

80x15.png

89 ms

wpaudio-pause.png

wpaudio-pause.png

51 ms

collect

collect

39 ms

collect

collect

69 ms

nr-686.min.js

nr-686.min.js

187 ms

300lo.json

300lo.json

15 ms

sh.7c7179124ea24ac6ba46caac.html

sh.7c7179124ea24ac6ba46caac.html

158 ms

custom-messages.ff94d8c06a032bf68fcb.js

custom-messages.ff94d8c06a032bf68fcb.js

151 ms

layers.3643cb2e25fb91c29386.js

layers.3643cb2e25fb91c29386.js

10 ms

Accessibility Review

saylor.org accessibility score

75

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 have valid values

High

ARIA IDs are not unique

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Buttons do not have an accessible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

saylor.org best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

saylor.org SEO score

100

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

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 Saylor.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 Saylor.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

saylor.org

Open Graph description is not detected on the main page of Saylor. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: