Tools & Wizards About Us
sleep.wustl.edu screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    60% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

sleep.wustl.edu

Home | Section of Sleep Medicine | Washington University in St. Louis

Page Load Speed

988 ms in total

First Response

206 ms

Resources Loaded

606 ms

Page Rendered

176 ms

sleep.wustl.edu screenshot

About Website

Visit sleep.wustl.edu now to see the best up-to-date Sleep Wu St L content for United States and also check out these interesting facts you probably never knew about sleep.wustl.edu

Our section is committed to improving the quality of life for those experiencing sleep disorders through patient care, medical education and research. ...

Visit sleep.wustl.edu

Key Findings

We analyzed Sleep.wustl.edu page load time and found that the first response time was 206 ms and then it took 782 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

sleep.wustl.edu performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value12.0 s

0/100

25%

SI (Speed Index)

Value5.3 s

58/100

10%

TBT (Total Blocking Time)

Value600 ms

50/100

30%

CLS (Cumulative Layout Shift)

Value0.047

99/100

15%

TTI (Time to Interactive)

Value11.4 s

19/100

10%

Network Requests Diagram

sleep.wustl.edu

206 ms

wp-emoji-release.min.js

81 ms

styles.css

71 ms

user.css

67 ms

style.css

104 ms

Our browser made a total of 28 requests to load all elements on the main page. We found that 89% of them (25 requests) were addressed to the original Sleep.wustl.edu, 7% (2 requests) were made to Google-analytics.com and 4% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (229 ms) belongs to the original domain Sleep.wustl.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 226.5 kB (45%)

Content Size

506.0 kB

After Optimization

279.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sleep.wustl.edu main page is 506.0 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. 25% of websites need less resources to load. Javascripts take 224.4 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 17.2 kB

  • Original 22.2 kB
  • After minification 20.5 kB
  • After compression 5.0 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 17.2 kB or 77% of the original size.

Image Optimization

-8%

Potential reduce by 13.5 kB

  • Original 177.1 kB
  • After minification 163.6 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. Sleep Wu St L images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 148.6 kB

  • Original 224.4 kB
  • After minification 221.3 kB
  • After compression 75.9 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 148.6 kB or 66% of the original size.

CSS Optimization

-57%

Potential reduce by 47.2 kB

  • Original 82.3 kB
  • After minification 71.5 kB
  • After compression 35.1 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. Sleep.wustl.edu needs all CSS files to be minified and compressed as it can save up to 47.2 kB or 57% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (67%)

Requests Now

27

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sleep Wu St L. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sleep.wustl.edu

sleep.wustl.edu

206 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

81 ms

styles.css

styles.css

71 ms

user.css

user.css

67 ms

style.css

style.css

104 ms

style.css

style.css

68 ms

css

css

26 ms

dashicons.min.css

dashicons.min.css

134 ms

jquery.js

jquery.js

229 ms

jquery-migrate.min.js

jquery-migrate.min.js

105 ms

jquery.form.min.js

jquery.form.min.js

119 ms

scripts.js

scripts.js

99 ms

functions.js

functions.js

123 ms

wp-embed.min.js

wp-embed.min.js

123 ms

analytics.js

analytics.js

5 ms

collect

collect

39 ms

wuphysicians-logo.svg

wuphysicians-logo.svg

115 ms

search-mobile.svg

search-mobile.svg

116 ms

close.svg

close.svg

118 ms

menu.svg

menu.svg

119 ms

search.svg

search.svg

118 ms

sleep_header.jpg

sleep_header.jpg

124 ms

map.jpg

map.jpg

126 ms

seal.png

seal.png

164 ms

wusm-logo-footer.svg

wusm-logo-footer.svg

120 ms

facebook.svg

facebook.svg

122 ms

twitter.svg

twitter.svg

121 ms

flickr.svg

flickr.svg

125 ms

Accessibility Review

sleep.wustl.edu accessibility score

87

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

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

sleep.wustl.edu best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

sleep.wustl.edu 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 Sleep.wustl.edu 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 Sleep.wustl.edu 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

sleep.wustl.edu

Open Graph description is not detected on the main page of Sleep Wu St L. 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: