Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

id.wustl.edu

National Leaders in Infectious Diseases - Division of Infectious Diseases

Page Load Speed

5.3 sec in total

First Response

124 ms

Resources Loaded

3.9 sec

Page Rendered

1.3 sec

id.wustl.edu screenshot

About Website

Click here to check amazing Id Wustl content for United States. Otherwise, check out these important facts you probably never knew about id.wustl.edu

The Division of Infectious Diseases provides outstanding clinical care, conducts ground-breaking research and trains the next generation of leaders.

Visit id.wustl.edu

Key Findings

We analyzed Id.wustl.edu page load time and found that the first response time was 124 ms and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

id.wustl.edu performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.3 s

3/100

10%

LCP (Largest Contentful Paint)

Value13.3 s

0/100

25%

SI (Speed Index)

Value30.4 s

0/100

10%

TBT (Total Blocking Time)

Value42,060 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.008

100/100

15%

TTI (Time to Interactive)

Value57.2 s

0/100

10%

Network Requests Diagram

id.wustl.edu

124 ms

infectiousdiseases.wustl.edu

263 ms

js

95 ms

wp-emoji-release.min.js

41 ms

leaflet.min.css

81 ms

Our browser made a total of 114 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Id.wustl.edu, 67% (76 requests) were made to Infectiousdiseases.wustl.edu and 11% (12 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.1 sec) relates to the external source Infectiousdiseases.wustl.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 606.6 kB (15%)

Content Size

4.0 MB

After Optimization

3.4 MB

In fact, the total size of Id.wustl.edu main page is 4.0 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. 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. Images take 3.2 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 81.6 kB

  • Original 105.9 kB
  • After minification 104.4 kB
  • After compression 24.3 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 81.6 kB or 77% of the original size.

Image Optimization

-3%

Potential reduce by 92.2 kB

  • Original 3.2 MB
  • After minification 3.1 MB

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. Id Wustl images are well optimized though.

JavaScript Optimization

-36%

Potential reduce by 61.2 kB

  • Original 171.1 kB
  • After minification 170.7 kB
  • After compression 109.9 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 61.2 kB or 36% of the original size.

CSS Optimization

-66%

Potential reduce by 371.6 kB

  • Original 564.8 kB
  • After minification 564.6 kB
  • After compression 193.2 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. Id.wustl.edu needs all CSS files to be minified and compressed as it can save up to 371.6 kB or 66% of the original size.

Requests Breakdown

Number of requests can be reduced by 76 (76%)

Requests Now

100

After Optimization

24

The browser has sent 100 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Id Wustl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 57 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

id.wustl.edu accessibility score

93

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.

Best Practices

id.wustl.edu best practices score

92

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

Missing source maps for large first-party JavaScript

SEO Factors

id.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 Id.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 Id.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

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