Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 0

    Accessibility

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 0

    SEO

uni-bonn.de

University of Bonn

Page Load Speed

4.8 sec in total

First Response

313 ms

Resources Loaded

4.3 sec

Page Rendered

147 ms

uni-bonn.de screenshot

About Website

Welcome to uni-bonn.de homepage info - get ready to check Uni Bonn best content for Germany right away, or after learning these important things about uni-bonn.de

The University of Excellence in Bonn is one of Germany's top universities. Study and research at one of the largest and best research-led universities in Germany.

Visit uni-bonn.de

Key Findings

We analyzed Uni-bonn.de page load time and found that the first response time was 313 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

uni-bonn.de performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.9 s

1/100

10%

LCP (Largest Contentful Paint)

Value11.9 s

0/100

25%

SI (Speed Index)

Value19.5 s

0/100

10%

TBT (Total Blocking Time)

Value11,480 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value19.8 s

2/100

10%

Network Requests Diagram

uni-bonn.de

313 ms

www.uni-bonn.de

305 ms

www.uni-bonn.de

551 ms

base-cachekey1428.css

112 ms

unibonnprint-cachekey3240.css

217 ms

Our browser made a total of 73 requests to load all elements on the main page. We found that 95% of them (69 requests) were addressed to the original Uni-bonn.de, 3% (2 requests) were made to Imagesrv.adition.com and 3% (2 requests) were made to Ad1.adfarm1.adition.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Uni-bonn.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 61.1 kB (30%)

Content Size

205.9 kB

After Optimization

144.8 kB

In fact, the total size of Uni-bonn.de main page is 205.9 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. 30% of websites need less resources to load. Images take 133.3 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 47.4 kB

  • Original 56.6 kB
  • After minification 47.5 kB
  • After compression 9.2 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 9.1 kB, which is 16% 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 47.4 kB or 84% of the original size.

Image Optimization

-7%

Potential reduce by 9.6 kB

  • Original 133.3 kB
  • After minification 123.6 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 Bonn images are well optimized though.

JavaScript Optimization

-26%

Potential reduce by 4.1 kB

  • Original 16.0 kB
  • After minification 14.9 kB
  • After compression 11.9 kB

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 4.1 kB or 26% of the original size.

Requests Breakdown

Number of requests can be reduced by 40 (57%)

Requests Now

70

After Optimization

30

The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Uni Bonn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Best Practices

uni-bonn.de best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

uni-bonn.de SEO score

0

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Uni-bonn.de can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it does not match the claimed German language. Our system also found out that Uni-bonn.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.

Social Sharing Optimization

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