Analyze Välkommen till KTH | KTH

Sedan starten 1827 har KTH utvecklats till ett av Europas ledande tekniska universitet och en viktig arena för kunskapsutveckling. Som Sveriges största universitet för teknisk forskning och utbildning...

Page load speed analysis

  • 68/100

    Normal result
  • 6

    Successful tests
  • 2

    Failed tests
  • First response

    661 ms

  • Resources loaded

    3.7 sec

  • Page rendered

    208 ms

  • Total page load time

    4.6 sec

Click here to check amazing KTH content for Sweden. Otherwise, check out these important facts you probably never knew about

We analyzed page load time and found that the first response time was 661 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Page optimization

  • HTML 65.5 kB
    Images 789.8 kB
    Javascripts 467.6 kB
    CSS 403.3 kB

    In fact, the total size of main page is 1.7 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. 30% of websites need less resources to load. Images take 789.8 kB which makes up the majority of the site volume.

    • Original 65.5 kB
    • After minification 62.8 kB
    • After compression 15.2 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 50.3 kB or 77% of the original size.

    • Original 789.8 kB
    • After optimization 757.5 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. KTH images are well optimized though.

    • Original 467.6 kB
    • After minification 463.1 kB
    • After compression 147.2 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 320.4 kB or 69% of the original size.

    • Original 403.3 kB
    • After minification 332.0 kB
    • After compression 49.9 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 353.3 kB or 88% of the original size.

Network requests diagram

  • kth.css
  • kth-magazine.css
  • core.min.js
  • profile.jsp
  • survey.js
  • ees-student-web-survey-4.js
  • searchboxautocomplete.js
  • widget.js
  • analytics.js
  • iframe_api
  • KTH_Logotyp_RGB_2013-2.svg
  • input-clear.svg
  • input-clear-gray.svg
  • search-icon.svg
  • nalbild-andreas-fischermina-rajabi-s.jpg
  • sofia_svante.jpg
  • morgondagens-stad.jpg
  • sodertalje.jpg
  • kthmagazine.png
  • stod-kth-knapp.png
  • rektorsbrev.jpg
  • fasad-670.jpg
  • l.gif
  • collect
  • all.js
  • plusone.js
  • in.js
  • geolocation.jsp
  • enable
  • www-widgetapi.js
  • en_UK.svg
  • white-arrow.svg
  • caption-green.png
  • gray-arrow.svg
  • back-to-top.svg
  • secureAnonymousFramework
  • cb=gapi.loaded_0
  • xd_arbiter.php
  • xd_arbiter.php
  • 2071e85d4af6.css
  • 55c44d10fd3b.js
  • ajax-loader-65656c.gif
  • dialog-arrow.png

Our browser made a total of 46 requests to load all elements on the main page. We found that 72% of them (33 requests) were addressed to the original, 4% (2 requests) were made to and 4% (2 requests) were made to The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain

Additional info on


The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of KTH. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and as a result speed up the page load time.











Possible request optimization













Normal result

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 6661
NS 692
NS 692
NS 692
NS 692

Language and encoding

Good result


SV sv language flag


SV sv 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 Swedish is used on the page, and it matches the claimed language. 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 73.5% of all visits is Sweden. It’s good for that their server is also located in Sweden, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Poor result

Social Sharing Optimization

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

Share this report in social media

Analyze another website