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tomellislab.com screenshot

Report Summary

  • 49

    Performance

    Renders faster than
    67% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

tomellislab.com

Synthetic biology research | Tom Ellis Lab | London

Page Load Speed

757 ms in total

First Response

74 ms

Resources Loaded

627 ms

Page Rendered

56 ms

tomellislab.com screenshot

About Website

Visit tomellislab.com now to see the best up-to-date Tom Ellis Lab content and also check out these interesting facts you probably never knew about tomellislab.com

Tom Ellis Lab - Synthetic Genomics and Synthetic Biology Research Group at Imperial College London. A bioengineering and biotechnology research group in London. Programming DNA at the gene and genome ...

Visit tomellislab.com

Key Findings

We analyzed Tomellislab.com page load time and found that the first response time was 74 ms and then it took 683 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

tomellislab.com performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

67/100

10%

LCP (Largest Contentful Paint)

Value8.7 s

1/100

25%

SI (Speed Index)

Value3.8 s

84/100

10%

TBT (Total Blocking Time)

Value450 ms

62/100

30%

CLS (Cumulative Layout Shift)

Value0.11

87/100

15%

TTI (Time to Interactive)

Value12.1 s

16/100

10%

Network Requests Diagram

www.tomellislab.com

74 ms

minified.js

103 ms

focus-within-polyfill.js

143 ms

polyfill.min.js

97 ms

thunderbolt-commons.8add2233.bundle.min.js

201 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Tomellislab.com, 51% (18 requests) were made to Static.parastorage.com and 37% (13 requests) were made to Static.wixstatic.com. The less responsive or slowest element that took the longest time to load (218 ms) relates to the external source Static.parastorage.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 412.6 kB (50%)

Content Size

818.7 kB

After Optimization

406.1 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Tomellislab.com main page is 818.7 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. HTML takes 445.6 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 343.5 kB

  • Original 445.6 kB
  • After minification 444.0 kB
  • After compression 102.1 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 343.5 kB or 77% of the original size.

Image Optimization

-25%

Potential reduce by 21.0 kB

  • Original 83.7 kB
  • After minification 62.7 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. Obviously, Tom Ellis Lab needs image optimization as it can save up to 21.0 kB or 25% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-17%

Potential reduce by 48.1 kB

  • Original 289.4 kB
  • After minification 289.4 kB
  • After compression 241.3 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 48.1 kB or 17% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (38%)

Requests Now

26

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tom Ellis 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 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.tomellislab.com

www.tomellislab.com

74 ms

minified.js

minified.js

103 ms

focus-within-polyfill.js

focus-within-polyfill.js

143 ms

polyfill.min.js

polyfill.min.js

97 ms

thunderbolt-commons.8add2233.bundle.min.js

thunderbolt-commons.8add2233.bundle.min.js

201 ms

main.1550a9c2.bundle.min.js

main.1550a9c2.bundle.min.js

218 ms

main.renderer.1d21f023.bundle.min.js

main.renderer.1d21f023.bundle.min.js

196 ms

lodash.min.js

lodash.min.js

200 ms

react.production.min.js

react.production.min.js

198 ms

react-dom.production.min.js

react-dom.production.min.js

201 ms

siteTags.bundle.min.js

siteTags.bundle.min.js

218 ms

b48197_595b9e9329b94ddba68d40c8d77cd418f000.jpg

b48197_595b9e9329b94ddba68d40c8d77cd418f000.jpg

81 ms

bundle.min.js

bundle.min.js

169 ms

b48197_60a5edbc780446d1b0a91bf545f1ddbc~mv2.jpg

b48197_60a5edbc780446d1b0a91bf545f1ddbc~mv2.jpg

130 ms

b48197_49584596e1b94383b45e4172aa939633~mv2.png

b48197_49584596e1b94383b45e4172aa939633~mv2.png

133 ms

b48197_d1cc7cfdc14840e48d30dd459f62d93b~mv2.png

b48197_d1cc7cfdc14840e48d30dd459f62d93b~mv2.png

134 ms

b48197_a402ea2ce4aa41dabd92dab0fb8c83a1~mv2.png

b48197_a402ea2ce4aa41dabd92dab0fb8c83a1~mv2.png

134 ms

b48197_3baf456b083e476a8b2318cfa719ed00~mv2.png

b48197_3baf456b083e476a8b2318cfa719ed00~mv2.png

133 ms

b48197_4fe32d51e35d4eebb881bbb2fb4155ba~mv2.jpg

b48197_4fe32d51e35d4eebb881bbb2fb4155ba~mv2.jpg

133 ms

b48197_59a04b5dd5b94954bfcc21c03e0835ad~mv2.jpg

b48197_59a04b5dd5b94954bfcc21c03e0835ad~mv2.jpg

132 ms

b48197_7a461424ce0e403fbdf990942d41b6af~mv2.png

b48197_7a461424ce0e403fbdf990942d41b6af~mv2.png

140 ms

mel9.png

mel9.png

140 ms

b48197_bd0454c965d74d72807d8a70d37da8f2~mv2.jpg

b48197_bd0454c965d74d72807d8a70d37da8f2~mv2.jpg

139 ms

80de9d5d-ab5f-40ce-911b-104e51e93d7c.woff

80de9d5d-ab5f-40ce-911b-104e51e93d7c.woff

14 ms

file.woff

file.woff

13 ms

file.woff

file.woff

69 ms

4021a3b9-f782-438b-aeb4-c008109a8b64.woff

4021a3b9-f782-438b-aeb4-c008109a8b64.woff

68 ms

b56b944e-bbe0-4450-a241-de2125d3e682.woff

b56b944e-bbe0-4450-a241-de2125d3e682.woff

68 ms

6f8d1983-4d34-4fa4-9110-988f6c495757.woff

6f8d1983-4d34-4fa4-9110-988f6c495757.woff

12 ms

03805817-4611-4dbc-8c65-0f73031c3973.woff

03805817-4611-4dbc-8c65-0f73031c3973.woff

12 ms

80c34ad2-27c2-4d99-90fa-985fd64ab81a.woff

80c34ad2-27c2-4d99-90fa-985fd64ab81a.woff

10 ms

deprecation-en.v5.html

deprecation-en.v5.html

7 ms

bolt-performance

bolt-performance

62 ms

deprecation-style.v5.css

deprecation-style.v5.css

43 ms

right-arrow.svg

right-arrow.svg

41 ms

Accessibility Review

tomellislab.com accessibility score

98

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

tomellislab.com 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

High

Page has valid source maps

SEO Factors

tomellislab.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 Tomellislab.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 Tomellislab.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

tomellislab.com

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