Report Summary

  • 64

    Performance

    Renders faster than
    78% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 73% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    65% of websites

  • 90

    SEO

    Google-friendlier than
    73% of websites

informatik.uni-konstanz.de

Fachbereich Informatik und Informationswissenschaft

Page Load Speed

3.7 sec in total

First Response

308 ms

Resources Loaded

3.2 sec

Page Rendered

135 ms

informatik.uni-konstanz.de screenshot

About Website

Visit informatik.uni-konstanz.de now to see the best up-to-date Informatik Uni Konstanz content for Germany and also check out these interesting facts you probably never knew about informatik.uni-konstanz.de

Universität Konstanz

Visit informatik.uni-konstanz.de

Key Findings

We analyzed Informatik.uni-konstanz.de page load time and found that the first response time was 308 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

informatik.uni-konstanz.de performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value3.5 s

63/100

25%

SI (Speed Index)

Value6.3 s

41/100

10%

TBT (Total Blocking Time)

Value440 ms

64/100

30%

CLS (Cumulative Layout Shift)

Value0.01

100/100

15%

TTI (Time to Interactive)

Value9.7 s

29/100

10%

Network Requests Diagram

informatik.uni-konstanz.de

308 ms

www.informatik.uni-konstanz.de

1650 ms

stylesheet_1562e2a009.css

202 ms

CssDemo.css

303 ms

cal.css

301 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 86% of them (37 requests) were addressed to the original Informatik.uni-konstanz.de, 12% (5 requests) were made to Google.com and 2% (1 request) were made to Cse.google.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Informatik.uni-konstanz.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 365.3 kB (26%)

Content Size

1.4 MB

After Optimization

1.0 MB

In fact, the total size of Informatik.uni-konstanz.de main page is 1.4 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. 45% of websites need less resources to load. Images take 927.0 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 14.0 kB

  • Original 19.6 kB
  • After minification 18.4 kB
  • After compression 5.6 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 14.0 kB or 72% of the original size.

Image Optimization

-1%

Potential reduce by 8.1 kB

  • Original 927.0 kB
  • After minification 919.0 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. Informatik Uni Konstanz images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 223.8 kB

  • Original 313.5 kB
  • After minification 287.3 kB
  • After compression 89.7 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 223.8 kB or 71% of the original size.

CSS Optimization

-84%

Potential reduce by 119.4 kB

  • Original 142.3 kB
  • After minification 117.9 kB
  • After compression 22.9 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. Informatik.uni-konstanz.de needs all CSS files to be minified and compressed as it can save up to 119.4 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 25 (63%)

Requests Now

40

After Optimization

15

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Informatik Uni Konstanz. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

informatik.uni-konstanz.de accessibility score

87

Accessibility Issues

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

Form elements do not have associated labels

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

informatik.uni-konstanz.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

SEO Factors

informatik.uni-konstanz.de SEO score

90

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    EN

  • Encoding

    UTF-8

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