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Report Summary

  • 60

    Performance

    Renders faster than
    75% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

biogen.co.uk

Home | Biogen

Page Load Speed

2.3 sec in total

First Response

372 ms

Resources Loaded

1.8 sec

Page Rendered

113 ms

biogen.co.uk screenshot

About Website

Welcome to biogen.co.uk homepage info - get ready to check Biogen best content right away, or after learning these important things about biogen.co.uk

Visit biogen.co.uk

Key Findings

We analyzed Biogen.co.uk page load time and found that the first response time was 372 ms and then it took 1.9 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

biogen.co.uk performance score

60

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value7.4 s

4/100

25%

SI (Speed Index)

Value5.2 s

59/100

10%

TBT (Total Blocking Time)

Value90 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.049

99/100

15%

TTI (Time to Interactive)

Value5.3 s

73/100

10%

Network Requests Diagram

biogen.co.uk

372 ms

sitebuilder-ltr-css-bundle.css.v1

87 ms

sitebuilder-css-bundle.css.v1

167 ms

sitebuilder-css-large-bundle.css.v1

246 ms

0c2fc25e-ac77-46de-b028-e2148a701298.css

397 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 55% of them (18 requests) were addressed to the original Biogen.co.uk, 36% (12 requests) were made to Fonts.gstatic.com and 6% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (527 ms) belongs to the original domain Biogen.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 58.2 kB (18%)

Content Size

321.4 kB

After Optimization

263.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Biogen.co.uk main page is 321.4 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. 35% of websites need less resources to load. CSS take 112.8 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 31.1 kB

  • Original 35.3 kB
  • After minification 22.0 kB
  • After compression 4.3 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. This page needs HTML code to be minified as it can gain 13.4 kB, which is 38% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 31.1 kB or 88% of the original size.

Image Optimization

-20%

Potential reduce by 15.2 kB

  • Original 77.8 kB
  • After minification 62.6 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. Obviously, Biogen needs image optimization as it can save up to 15.2 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 848 B

  • Original 95.4 kB
  • After minification 95.4 kB
  • After compression 94.5 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

-10%

Potential reduce by 11.1 kB

  • Original 112.8 kB
  • After minification 112.8 kB
  • After compression 101.8 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. Biogen.co.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 7 (37%)

Requests Now

19

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Biogen. 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 CSS and as a result speed up the page load time.

Network Requests Diagram

biogen.co.uk

biogen.co.uk

372 ms

sitebuilder-ltr-css-bundle.css.v1

sitebuilder-ltr-css-bundle.css.v1

87 ms

sitebuilder-css-bundle.css.v1

sitebuilder-css-bundle.css.v1

167 ms

sitebuilder-css-large-bundle.css.v1

sitebuilder-css-large-bundle.css.v1

246 ms

0c2fc25e-ac77-46de-b028-e2148a701298.css

0c2fc25e-ac77-46de-b028-e2148a701298.css

397 ms

js

js

147 ms

sitebuilder-js-bundle.js.v1

sitebuilder-js-bundle.js.v1

527 ms

css

css

36 ms

css

css

56 ms

website-logo.png

website-logo.png

167 ms

biogen1lrnd.jpg

biogen1lrnd.jpg

168 ms

image_5_normal_6.jpg

image_5_normal_6.jpg

263 ms

image_6_normal_17.jpg

image_6_normal_17.jpg

175 ms

image_7_normal_12.jpg

image_7_normal_12.jpg

168 ms

image_8_normal_34.jpg

image_8_normal_34.jpg

263 ms

iso-logo3.png

iso-logo3.png

254 ms

lrqav3.png

lrqav3.png

256 ms

toitu.png

toitu.png

270 ms

KFOmCnqEu92Fr1Mu4mxM.woff

KFOmCnqEu92Fr1Mu4mxM.woff

19 ms

KFOlCnqEu92Fr1MmEU9fBBc-.woff

KFOlCnqEu92Fr1MmEU9fBBc-.woff

25 ms

KFOlCnqEu92Fr1MmSU5fBBc-.woff

KFOlCnqEu92Fr1MmSU5fBBc-.woff

58 ms

KFOkCnqEu92Fr1MmgVxIIzQ.woff

KFOkCnqEu92Fr1MmgVxIIzQ.woff

60 ms

KFOlCnqEu92Fr1MmWUlfBBc-.woff

KFOlCnqEu92Fr1MmWUlfBBc-.woff

59 ms

KFOlCnqEu92Fr1MmYUtfBBc-.woff

KFOlCnqEu92Fr1MmYUtfBBc-.woff

59 ms

ionicons.woff

ionicons.woff

376 ms

KFOkCnqEu92Fr1Mu51xIIzQ.woff

KFOkCnqEu92Fr1Mu51xIIzQ.woff

58 ms

KFOjCnqEu92Fr1Mu51S7ACc6CsI.woff

KFOjCnqEu92Fr1Mu51S7ACc6CsI.woff

59 ms

KFOjCnqEu92Fr1Mu51TjASc6CsI.woff

KFOjCnqEu92Fr1Mu51TjASc6CsI.woff

57 ms

KFOiCnqEu92Fr1Mu51QrEzAdKQ.woff

KFOiCnqEu92Fr1Mu51QrEzAdKQ.woff

75 ms

KFOjCnqEu92Fr1Mu51TzBic6CsI.woff

KFOjCnqEu92Fr1Mu51TzBic6CsI.woff

75 ms

KFOjCnqEu92Fr1Mu51TLBCc6CsI.woff

KFOjCnqEu92Fr1Mu51TLBCc6CsI.woff

76 ms

sitebuilder-css-small-bundle.css.v1

sitebuilder-css-small-bundle.css.v1

80 ms

sitebuilder-css-prnt-bundle.css.v1

sitebuilder-css-prnt-bundle.css.v1

80 ms

Accessibility Review

biogen.co.uk accessibility score

87

Accessibility Issues

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

High

Links do not have a discernible 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.

Best Practices

biogen.co.uk 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

biogen.co.uk SEO score

93

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 Biogen.co.uk 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 Biogen.co.uk 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

biogen.co.uk

Open Graph description is not detected on the main page of Biogen. 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: