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wchunglab.com screenshot

Report Summary

  • 72

    Performance

    Renders faster than
    82% of other websites

  • 99

    Accessibility

    Visual factors better than
    that of 96% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

wchunglab.com

Chung Lab at Boston Children's Hospital | Human Genetics and Precision Medicine

Page Load Speed

699 ms in total

First Response

11 ms

Resources Loaded

451 ms

Page Rendered

237 ms

wchunglab.com screenshot

About Website

Welcome to wchunglab.com homepage info - get ready to check W Chung Lab best content right away, or after learning these important things about wchunglab.com

Wendy Chung, MD PhD - Chair of Pediatrics at Boston Children's Hospital Welcome to the Chung Lab at Boston Children's Hospital/Harvard Medical School. Dr. Chung's research relates to th...

Visit wchunglab.com

Key Findings

We analyzed Wchunglab.com page load time and found that the first response time was 11 ms and then it took 688 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

wchunglab.com performance score

72

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

46/100

10%

LCP (Largest Contentful Paint)

Value5.5 s

19/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.037

100/100

15%

TTI (Time to Interactive)

Value4.6 s

81/100

10%

Network Requests Diagram

wchunglab.com

11 ms

wchunglab.com

23 ms

webfont.js

105 ms

124 ms

127 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 6% of them (2 requests) were addressed to the original Wchunglab.com, 27% (9 requests) were made to S2.wp.com and 15% (5 requests) were made to S0.wp.com. The less responsive or slowest element that took the longest time to load (223 ms) relates to the external source Wchunglab.files.wordpress.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 67.3 kB (19%)

Content Size

358.1 kB

After Optimization

290.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Wchunglab.com main page is 358.1 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. 50% of websites need less resources to load. Images take 162.0 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 62.3 kB

  • Original 83.5 kB
  • After minification 81.3 kB
  • After compression 21.2 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. 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 62.3 kB or 75% of the original size.

Image Optimization

-3%

Potential reduce by 4.1 kB

  • Original 162.0 kB
  • After minification 157.9 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. W Chung Lab images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 484 B

  • Original 70.7 kB
  • After minification 70.7 kB
  • After compression 70.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-1%

Potential reduce by 414 B

  • Original 42.0 kB
  • After minification 42.0 kB
  • After compression 41.6 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. Wchunglab.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 17 (61%)

Requests Now

28

After Optimization

11

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of W Chung Lab. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

wchunglab.com

wchunglab.com

11 ms

wchunglab.com

wchunglab.com

23 ms

webfont.js

webfont.js

105 ms

124 ms

127 ms

132 ms

131 ms

block-editor.css

block-editor.css

145 ms

css

css

156 ms

137 ms

129 ms

global.css

global.css

141 ms

140 ms

hovercards.min.js

hovercards.min.js

136 ms

wpgroho.js

wpgroho.js

140 ms

141 ms

127 ms

w.js

w.js

135 ms

css

css

57 ms

cropped-columbia-light.jpg

cropped-columbia-light.jpg

146 ms

search-icon.png

search-icon.png

50 ms

g.gif

g.gif

86 ms

remote-login.php

remote-login.php

124 ms

wpcom-gray-white.png

wpcom-gray-white.png

37 ms

chung-wendy.jpg

chung-wendy.jpg

223 ms

sharing-data.jpg

sharing-data.jpg

144 ms

g.gif

g.gif

85 ms

g.gif

g.gif

85 ms

font

font

48 ms

font

font

55 ms

font

font

54 ms

actionbar.css

actionbar.css

2 ms

actionbar.js

actionbar.js

8 ms

Accessibility Review

wchunglab.com accessibility score

99

Accessibility Issues

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

wchunglab.com 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

SEO Factors

wchunglab.com 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 Wchunglab.com 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 Wchunglab.com 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

wchunglab.com

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