Tools & Wizards About Us
ais.uni-bonn.de screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

ais.uni-bonn.de

University of Bonn, Computer Science VI, Autonomous Intelligent Systems

Page Load Speed

1.2 sec in total

First Response

304 ms

Resources Loaded

794 ms

Page Rendered

100 ms

ais.uni-bonn.de screenshot

About Website

Visit ais.uni-bonn.de now to see the best up-to-date Ais Uni Bonn content for Germany and also check out these interesting facts you probably never knew about ais.uni-bonn.de

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Key Findings

We analyzed Ais.uni-bonn.de page load time and found that the first response time was 304 ms and then it took 894 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

ais.uni-bonn.de performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.8 s

100/100

25%

SI (Speed Index)

Value1.1 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.8 s

100/100

10%

Network Requests Diagram

ais.uni-bonn.de

304 ms

style.css

99 ms

logo_uni_bonn_ais.gif

197 ms

AIS_heading.gif

196 ms

DRC_Finals_Team_NimbRo_Rescue_s.jpg

489 ms

Our browser made a total of 5 requests to load all elements on the main page. We found that all of those requests were addressed to Ais.uni-bonn.de and no external sources were called. The less responsive or slowest element that took the longest time to load (489 ms) belongs to the original domain Ais.uni-bonn.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 20.6 kB (17%)

Content Size

118.9 kB

After Optimization

98.2 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Ais.uni-bonn.de main page is 118.9 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Images take 111.9 kB which makes up the majority of the site volume.

HTML Optimization

-64%

Potential reduce by 2.5 kB

  • Original 3.9 kB
  • After minification 3.9 kB
  • After compression 1.4 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 2.5 kB or 64% of the original size.

Image Optimization

-14%

Potential reduce by 15.8 kB

  • Original 111.9 kB
  • After minification 96.1 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. Obviously, Ais Uni Bonn needs image optimization as it can save up to 15.8 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-77%

Potential reduce by 2.4 kB

  • Original 3.1 kB
  • After minification 2.2 kB
  • After compression 706 B

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. Ais.uni-bonn.de needs all CSS files to be minified and compressed as it can save up to 2.4 kB or 77% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

4

After Optimization

4

  • Images
  • CSS

The browser has sent 4 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ais Uni Bonn. According to our analytics all requests are already optimized.

Network Requests Diagram

ais.uni-bonn.de

ais.uni-bonn.de

304 ms

style.css

style.css

99 ms

logo_uni_bonn_ais.gif

logo_uni_bonn_ais.gif

197 ms

AIS_heading.gif

AIS_heading.gif

196 ms

DRC_Finals_Team_NimbRo_Rescue_s.jpg

DRC_Finals_Team_NimbRo_Rescue_s.jpg

489 ms

Accessibility Review

ais.uni-bonn.de accessibility score

87

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

High

Links do not have a discernible name

Best Practices

ais.uni-bonn.de best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

ais.uni-bonn.de SEO score

67

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ais.uni-bonn.de 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 Ais.uni-bonn.de main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

ais.uni-bonn.de

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