3.2 sec in total
234 ms
2.1 sec
866 ms
Visit biogen.com now to see the best up-to-date Biogen content for United States and also check out these interesting facts you probably never knew about biogen.com
Biogen is a leading global biotechnology company that pioneers science and drives innovations for complex and devastating diseases. Biogen is advancing a pipeline of potential therapies across neurolo...
Visit biogen.comWe analyzed Biogen.com page load time and found that the first response time was 234 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
biogen.com performance score
name
value
score
weighting
Value5.4 s
7/100
10%
Value12.6 s
0/100
25%
Value6.9 s
34/100
10%
Value2,150 ms
6/100
30%
Value0
100/100
15%
Value21.0 s
1/100
10%
234 ms
144 ms
35 ms
19 ms
76 ms
Our browser made a total of 87 requests to load all elements on the main page. We found that 77% of them (67 requests) were addressed to the original Biogen.com, 10% (9 requests) were made to and 2% (2 requests) were made to Assets.adobedtm.com. The less responsive or slowest element that took the longest time to load (474 ms) relates to the external source Ssl.google-analytics.com.
Page size can be reduced by 1.9 MB (33%)
5.8 MB
3.8 MB
In fact, the total size of Biogen.com main page is 5.8 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. 80% 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 3.6 MB which makes up the majority of the site volume.
Potential reduce by 283.7 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 132.0 kB, which is 42% 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 283.7 kB or 91% of the original size.
Potential reduce by 175.1 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. Biogen images are well optimized though.
Potential reduce by 1.3 MB
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 1.3 MB or 82% of the original size.
Potential reduce by 157.1 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. Biogen.com needs all CSS files to be minified and compressed as it can save up to 157.1 kB or 74% of the original size.
Number of requests can be reduced by 27 (37%)
73
46
The browser has sent 73 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 22 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
biogen.com
234 ms
www.biogen.com
144 ms
satelliteLib-75125cc64b408976a6b5cf64bfe356a1727f3c8d.js
35 ms
main.css
19 ms
jquery.js
76 ms
jquery.js
104 ms
utils.js
60 ms
granite.js
60 ms
jquery.js
59 ms
responsive.js
68 ms
main.js
66 ms
slick.css
97 ms
clientlib.css
99 ms
custom.css
96 ms
modernizer.js
95 ms
video.js
132 ms
iwo4jwf.js
169 ms
shared.js
134 ms
underscore.js
132 ms
kernel.js
257 ms
analytics.js
132 ms
generic.js
129 ms
banner.css
130 ms
clientlib.js
158 ms
util.js
124 ms
rd
33 ms
main-blessed1.css
53 ms
id
128 ms
d
188 ms
biogen_logo.svg
20 ms
1435178695993.jpg
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biogen_logoMobile.svg
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header-img-bg-desktop2.png
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playButton2.png
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descriptionIndicator.png
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bubbleWhiteBG.png
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icomoon.woff
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icomoon.eot
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Uqng7AAAAA==
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9HNDzeJBDHKaSIxzlGMf5mhN8w0m+5RSnqeI7vucHzjxusMcN9ig22D9SqeDsAAAA
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therapyCard.png
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productPipelineBG.jpg
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card-trio_news-content-bg.jpg
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scroll-indicatorBG.png
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analytics.js
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s-code-contents-2598f7d8abec5cd07fa6f7319625738de424f098.js
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arrowLeftTablet.png
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MMVTzrZdpzXr5tZRvbqeV56qingUZ2sJMX2MVummjmRVp4iT3sZR8v8wqtvMprvM5+3uDNgQzhLQ5wkLc5RAedvMO7dNFND4fp5T2OcJRjHOd9PuBDTvARJzlF30jCjiTsSMIOf8L+C+CEORUAAA==
80 ms
ZJP8Iayr8T+vzL+482CEAAAA=
79 ms
p.gif
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biogen.com accessibility score
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
ARIA input fields do not have accessible names
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
[role] values are not valid
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
biogen.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Requests the geolocation permission on page load
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
biogen.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
Document uses legible font sizes
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Biogen.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 Biogen.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.
biogen.com
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: