Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 75% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

mathinf.uni-heidelberg.de

Faculty of Mathematics and Computer Science - Faculty of Mathematics and Computer Science

Page Load Speed

3.1 sec in total

First Response

418 ms

Resources Loaded

2.5 sec

Page Rendered

142 ms

mathinf.uni-heidelberg.de screenshot

About Website

Click here to check amazing Mathinf Uni Heidelberg content for Germany. Otherwise, check out these important facts you probably never knew about mathinf.uni-heidelberg.de

Homepage Fakultät für Mathematik und Informatik, Universität Heidelberg

Visit mathinf.uni-heidelberg.de

Key Findings

We analyzed Mathinf.uni-heidelberg.de page load time and found that the first response time was 418 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

mathinf.uni-heidelberg.de performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

84/100

10%

LCP (Largest Contentful Paint)

Value7.0 s

6/100

25%

SI (Speed Index)

Value5.9 s

48/100

10%

TBT (Total Blocking Time)

Value430 ms

64/100

30%

CLS (Cumulative Layout Shift)

Value0.021

100/100

15%

TTI (Time to Interactive)

Value6.4 s

60/100

10%

Network Requests Diagram

mathinf.uni-heidelberg.de

418 ms

mathinf.uni-heidelberg.de

492 ms

base_ltr.css

779 ms

basemod_ltr_spread.css

687 ms

content.css

688 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 68% of them (13 requests) were addressed to the original Mathinf.uni-heidelberg.de, 32% (6 requests) were made to Uni-heidelberg.de. The less responsive or slowest element that took the longest time to load (886 ms) relates to the external source Uni-heidelberg.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 123.1 kB (30%)

Content Size

406.9 kB

After Optimization

283.9 kB

In fact, the total size of Mathinf.uni-heidelberg.de main page is 406.9 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. 15% of websites need less resources to load. Images take 273.9 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 8.7 kB

  • Original 12.3 kB
  • After minification 9.5 kB
  • After compression 3.6 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. This page needs HTML code to be minified as it can gain 2.7 kB, which is 22% 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 8.7 kB or 71% of the original size.

Image Optimization

-12%

Potential reduce by 34.2 kB

  • Original 273.9 kB
  • After minification 239.7 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, Mathinf Uni Heidelberg needs image optimization as it can save up to 34.2 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-65%

Potential reduce by 60.1 kB

  • Original 93.1 kB
  • After minification 93.1 kB
  • After compression 33.0 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 60.1 kB or 65% of the original size.

CSS Optimization

-73%

Potential reduce by 20.1 kB

  • Original 27.6 kB
  • After minification 20.4 kB
  • After compression 7.5 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. Mathinf.uni-heidelberg.de needs all CSS files to be minified and compressed as it can save up to 20.1 kB or 73% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (35%)

Requests Now

17

After Optimization

11

The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Mathinf Uni Heidelberg. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

mathinf.uni-heidelberg.de accessibility score

90

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

Buttons do not have an accessible name

High

Links do not have a discernible name

Best Practices

mathinf.uni-heidelberg.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

Missing source maps for large first-party JavaScript

SEO Factors

mathinf.uni-heidelberg.de SEO score

83

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Mathinf.uni-heidelberg.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 Mathinf.uni-heidelberg.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 Mathinf Uni Heidelberg. 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: