2.8 sec in total
272 ms
2.2 sec
309 ms
Click here to check amazing Alexion content for United States. Otherwise, check out these important facts you probably never knew about alexion.com
Alexion is a global biopharmaceutical company focused on developing life-changing therapies for people living with rare disorders.
Visit alexion.comWe analyzed Alexion.com page load time and found that the first response time was 272 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
alexion.com performance score
name
value
score
weighting
Value3.7 s
29/100
10%
Value9.1 s
1/100
25%
Value16.9 s
0/100
10%
Value2,960 ms
3/100
30%
Value0.645
9/100
15%
Value33.9 s
0/100
10%
272 ms
30 ms
75 ms
114 ms
233 ms
Our browser made a total of 57 requests to load all elements on the main page. We found that 81% of them (46 requests) were addressed to the original Alexion.com, 4% (2 requests) were made to Fast.fonts.net and 4% (2 requests) were made to Sharesendsave.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Alexion.com.
Page size can be reduced by 1.2 MB (48%)
2.5 MB
1.3 MB
In fact, the total size of Alexion.com main page is 2.5 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. 55% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 34.7 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. 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 34.7 kB or 76% of the original size.
Potential reduce by 21.3 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. Alexion images are well optimized though.
Potential reduce by 1.0 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 1.0 MB or 78% of the original size.
Potential reduce by 105.9 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. Alexion.com needs all CSS files to be minified and compressed as it can save up to 105.9 kB or 83% of the original size.
Number of requests can be reduced by 24 (44%)
55
31
The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Alexion. 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 4 to 1 for CSS and as a result speed up the page load time.
alexion.com
272 ms
recaptcha_ajax.js
30 ms
video-js.min.css
75 ms
modal.css
114 ms
alexion.css
233 ms
uniform.default.css
148 ms
93da7f94-d89d-4bad-8917-42553b2795ee.js
101 ms
modernizr.custom.js
168 ms
jquery-1.8.3.min.js
322 ms
mediaelement-and-player.min.js
229 ms
jquery-ui-1.10.3.custom.js
394 ms
jquery.uniform.js
224 ms
video.js
35 ms
alexion.js
225 ms
responsinav.js
268 ms
matchmedia.js
277 ms
picturefill.js
282 ms
modal.js
258 ms
WebResource.axd
252 ms
ScriptResource.axd
261 ms
ScriptResource.axd
267 ms
PortalTemplate.aspx
299 ms
jquery.rss.min.js
271 ms
ShareSendSave
258 ms
ga.js
8 ms
alexionLogo.gif
83 ms
header-1_mobile.aspx
48 ms
header-1.aspx
1126 ms
header-2_mobile.aspx
82 ms
header-2.aspx
106 ms
header-3_mobile.aspx
560 ms
header-3.aspx
1605 ms
header-4_mobile.aspx
597 ms
header-4.aspx
630 ms
home_arrow.png
162 ms
home-swoosh.png
216 ms
home-swoosh-mobile.png
249 ms
1_rddhighlightlogo.aspx
285 ms
alexion-building-image_resize.aspx
321 ms
NH-community.aspx
373 ms
Zurichicon.aspx
410 ms
home-section-5-woman.jpg
460 ms
home-section-7-swoosh.png
507 ms
logo-alexion.png
558 ms
logo-alexion-footer.png
606 ms
__utm.gif
33 ms
header_bg.gif
580 ms
country_accordion_tile.jpg
612 ms
country_accordion_map.jpg
611 ms
search.gif
610 ms
nav-arrow.png
623 ms
nav-blue-bg.gif
661 ms
home-fade.png
661 ms
1cc7500b-6f46-439a-b015-7d9bad71b492.woff
35 ms
load
262 ms
load
282 ms
Alexion!20Pharmaceuticals!2C!20Inc!20(NASDAQ!3A!20ALXN)!20!7C!20World!20Leader!20in!20Treatments!20for!20Patients!20with!20Devastating!20and!20Rare!20Diseases
89 ms
alexion.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
Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.
[role]s are not contained by their required parent element
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
Image elements do not have [alt] attributes
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
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.
alexion.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
alexion.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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Alexion.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Alexion.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.
alexion.com
Open Graph data is detected on the main page of Alexion. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: