Analyze Cern Authentication

Page load speed analysis

  • 45/100

    Normal result
  • 5

    Successful tests
  • 3

    Failed tests
  • First response

    274 ms

  • Resources loaded

    4.2 sec

  • Page rendered

    130 ms

  • Total page load time

    4.6 sec

Click here to check amazing Social Cern content for United States. Otherwise, check out these important facts you probably never knew about

We analyzed page load time and found that the first response time was 274 ms and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Page optimization

  • HTML 3.7 MB
    Images 25.2 kB
    Javascripts 179.0 kB
    CSS 26.2 kB

    In fact, the total size of main page is 3.9 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. 20% of websites need less resources to load. HTML takes 3.7 MB which makes up the majority of the site volume.

    • Original 3.7 MB
    • After minification 3.7 MB
    • After compression 820.7 kB

    HTML optimization

    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 2.8 MB or 78% of the original size.

    • Original 25.2 kB
    • After optimization 21.0 kB

    Image optimization

    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, Social Cern needs image optimization as it can save up to 4.2 kB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

    • Original 179.0 kB
    • After minification 150.6 kB
    • After compression 48.7 kB

    JavaScript optimization

    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 130.3 kB or 73% of the original size.

    • Original 26.2 kB
    • After minification 18.3 kB
    • After compression 5.3 kB

    CSS optimization

    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. needs all CSS files to be minified and compressed as it can save up to 20.9 kB or 80% of the original size.

Network requests diagram

  • Authenticate.aspx
  • default.aspx
  • default.aspx
  • PTM55Fstylesheet.css
  • PTSansWeb.css
  • PTSerifWeb.css
  • toolbar.css
  • jquery.min.js
  • improvedDropDown.js
  • 01-CernWeb-General.css
  • 02-CernWeb-Header.css
  • 03-CernWeb-OISStyle.css
  • 06-CustomStyle.css
  • 07-default-ImprovedDropDown.css
  • 10-CernWeb-SmallDevices.css
  • WebResource.axd
  • WebResource.axd
  • WebResource.axd
  • ieff2.png
  • piwik.php
  • eugridpma.png
  • fingerprint.png
  • fbgl.png
  • eduGAIN50.png
  • cern-logo-large.png
  • rotator.aspx
  • drop_icon.png
  • bullet_go.png
  • PTS55F_W.woff
  • PTS75F_W.woff
  • PTS56F_W.woff
  • PTS76F_W.woff

Our browser made a total of 35 requests to load all elements on the main page. We found that 14% of them (5 requests) were addressed to the original, 63% (22 requests) were made to and 20% (7 requests) were made to The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source

Additional info on


The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Social Cern. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.









Possible request optimization











Normal result


As for redirects, our browser reached this domain in five steps. The first redirect led to, then it was forwarded to, and afterwards it was sent to /_login/default.aspx?ReturnUrl=%2f_layouts%2f15%2fAuthenticate.aspx%3fSource%3d%... and a few other URLs (see the full list below) before we finally managed to reach this website. We strongly recommend that the redirects should be reduced, as the more redirects a site has, the slower it loads.

IP address

This IP address is dedicated to This is the best domain hosting practice .

Normal result

IP Trace

DNS records

Type Host Target/ip TTL Other
A 10794

Language and encoding

Normal result


EN en language flag


N/A  language flag





Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 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 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.

HTTPS certificate

SSL Certificate has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Poor result

Visitor World Map

Country of origin for 13.2% of all visits is United States. It lies approximately 4920 miles away from the server location (Switzerland) and such a long distance can negatively affect website speed, as it takes some time for data to travel back and forth between those places. That’s why one of the best ways to speed up page load time for the majority of users is moving the server to United States or just closer to the user base.

Poor result

Poor result

Social Sharing Optimization

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

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