3.9 sec in total
789 ms
2.9 sec
278 ms
Click here to check amazing Uni Koeln content for Germany. Otherwise, check out these important facts you probably never knew about uni-koeln.de
Universität zu Köln. Gute Ideen seit 1388
Visit uni-koeln.deWe analyzed Uni-koeln.de page load time and found that the first response time was 789 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
uni-koeln.de performance score
name
value
score
weighting
Value2.5 s
69/100
10%
Value5.7 s
16/100
25%
Value4.1 s
80/100
10%
Value60 ms
100/100
30%
Value0.047
99/100
15%
Value4.0 s
87/100
10%
789 ms
335 ms
327 ms
328 ms
359 ms
Our browser made a total of 27 requests to load all elements on the main page. We found that 96% of them (26 requests) were addressed to the original Uni-koeln.de, 4% (1 request) were made to Matomo.rrz.uni-koeln.de. The less responsive or slowest element that took the longest time to load (789 ms) belongs to the original domain Uni-koeln.de.
Page size can be reduced by 120.1 kB (14%)
873.7 kB
753.7 kB
In fact, the total size of Uni-koeln.de main page is 873.7 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. 40% of websites need less resources to load. Images take 604.6 kB which makes up the majority of the site volume.
Potential reduce by 98.5 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 33.3 kB, which is 30% 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 98.5 kB or 88% of the original size.
Potential reduce by 12.6 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. Uni Koeln images are well optimized though.
Potential reduce by 115 B
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.
Potential reduce by 9.0 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. Uni-koeln.de needs all CSS files to be minified and compressed as it can save up to 9.0 kB or 15% of the original size.
We found no issues to fix!
21
21
The browser has sent 21 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Uni Koeln. According to our analytics all requests are already optimized.
www.uni-koeln.de
789 ms
style.out.css
335 ms
aenderung.css
327 ms
takomat-slider.css
328 ms
modernizr.min.js
359 ms
script-min.uzk.8AH.js
450 ms
svg-sprite.min.svg
245 ms
linkedin.svg
116 ms
instagram.svg
115 ms
mastodon.svg
112 ms
OpenSans-Regular-webfont.woff
302 ms
OpenSans-Bold-webfont.woff
301 ms
OpenSans-Semibold-webfont.woff
300 ms
OpenSans-BoldItalic-webfont.woff
287 ms
OpenSans-Light-webfont.woff
299 ms
024_Slider_mesh_biene.jpg
298 ms
Kachel_Astronomische_Uhr_320px.jpg
597 ms
nt_gen_dna_320x213.jpg
269 ms
nt_20240426_Essen_Bruening.jpg
604 ms
teaser_forsch_profil.jpg
265 ms
teaser_qualitaetsmanagement_q3.jpg
264 ms
teaser_nachhaltig.jpg
377 ms
teaser_hauptgeb_flaggen1_wegener.jpg
375 ms
teaser_gateway.jpg
381 ms
teaser_euniwell.jpg
410 ms
matomo.js
769 ms
svg-sprite.min.svg
551 ms
uni-koeln.de 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 IDs are not unique
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
Links do not have a discernible name
uni-koeln.de 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
uni-koeln.de SEO score
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
DE
DE
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Uni-koeln.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it matches the claimed language. Our system also found out that Uni-koeln.de 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.
uni-koeln.de
Open Graph description is not detected on the main page of Uni Koeln. 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: