Tools & Wizards About Us
didaktikchemie.uni-bayreuth.de screenshot

Report Summary

  • 39

    Performance

    Renders faster than
    59% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 69

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

didaktikchemie.uni-bayreuth.de

Didaktik der Biologie und Chemie

Page Load Speed

1.7 sec in total

First Response

313 ms

Resources Loaded

1.3 sec

Page Rendered

116 ms

didaktikchemie.uni-bayreuth.de screenshot

About Website

Welcome to didaktikchemie.uni-bayreuth.de homepage info - get ready to check Didaktik Chemie Uni Bayreuth best content for Germany right away, or after learning these important things about didaktikchemie.uni-bayreuth.de

Didaktik der Biologie und Chemie an der Universität Bayreuth, Studium Lehramt Chemie und Biologie, Forschung in Biologiedidaktik und Chemiedidaktik, Transfer mit der Schulpraxis

Visit didaktikchemie.uni-bayreuth.de

Key Findings

We analyzed Didaktikchemie.uni-bayreuth.de page load time and found that the first response time was 313 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

didaktikchemie.uni-bayreuth.de performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value8.1 s

3/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value330 ms

76/100

30%

CLS (Cumulative Layout Shift)

Value0.181

67/100

15%

TTI (Time to Interactive)

Value8.8 s

35/100

10%

Network Requests Diagram

didaktikchemie.uni-bayreuth.de

313 ms

index.html

309 ms

index.html

111 ms

global.css

205 ms

bg_body_lehrstuhl_medium.gif

115 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that all of those requests were addressed to Didaktikchemie.uni-bayreuth.de and no external sources were called. The less responsive or slowest element that took the longest time to load (316 ms) belongs to the original domain Didaktikchemie.uni-bayreuth.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 15.8 kB (41%)

Content Size

38.1 kB

After Optimization

22.3 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Didaktikchemie.uni-bayreuth.de main page is 38.1 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. Only 5% of websites need less resources to load. Images take 17.7 kB which makes up the majority of the site volume.

HTML Optimization

-66%

Potential reduce by 4.0 kB

  • Original 6.1 kB
  • After minification 5.3 kB
  • After compression 2.1 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 797 B, which is 13% 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 4.0 kB or 66% of the original size.

Image Optimization

-0%

Potential reduce by 86 B

  • Original 17.7 kB
  • After minification 17.6 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. Didaktik Chemie Uni Bayreuth images are well optimized though.

CSS Optimization

-81%

Potential reduce by 11.7 kB

  • Original 14.4 kB
  • After minification 10.2 kB
  • After compression 2.7 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. Didaktikchemie.uni-bayreuth.de needs all CSS files to be minified and compressed as it can save up to 11.7 kB or 81% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

6

After Optimization

6

  • Images
  • CSS

The browser has sent 6 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Didaktik Chemie Uni Bayreuth. According to our analytics all requests are already optimized.

Network Requests Diagram

didaktikchemie.uni-bayreuth.de

didaktikchemie.uni-bayreuth.de

313 ms

index.html

index.html

309 ms

index.html

index.html

111 ms

global.css

global.css

205 ms

bg_body_lehrstuhl_medium.gif

bg_body_lehrstuhl_medium.gif

115 ms

grafik-uni-bayreuth.gif

grafik-uni-bayreuth.gif

216 ms

didaktik_logo.png

didaktik_logo.png

316 ms

quadrat_orange.gif

quadrat_orange.gif

217 ms

didaktik_logo_gross.gif

didaktik_logo_gross.gif

315 ms

Accessibility Review

didaktikchemie.uni-bayreuth.de accessibility score

88

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

didaktikchemie.uni-bayreuth.de best practices score

69

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

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

didaktikchemie.uni-bayreuth.de SEO score

92

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

    DE

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Didaktikchemie.uni-bayreuth.de can be misinterpreted by Google and other search engines. Our service has detected that German 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 Didaktikchemie.uni-bayreuth.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

didaktikchemie.uni-bayreuth.de

Open Graph description is not detected on the main page of Didaktik Chemie Uni Bayreuth. 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: