Tools & Wizards About Us

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

biologie-schule.de

Biologie-Schule.de

Page Load Speed

4 sec in total

First Response

420 ms

Resources Loaded

3.4 sec

Page Rendered

138 ms

About Website

Visit biologie-schule.de now to see the best up-to-date Biologie Schule content for Germany and also check out these interesting facts you probably never knew about biologie-schule.de

Biologie-Portal für die Themen Botanik, Cytologie, Entwicklungsbiologie, Ethologie, Evolution, Genetik, Humanbiologie, Neurobiologie und Ökologie. Kostenlose Selbstlernvideos und Bio-Lexikon.

Visit biologie-schule.de

Key Findings

We analyzed Biologie-schule.de page load time and found that the first response time was 420 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

biologie-schule.de performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

17/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

32/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value2,730 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value12.5 s

14/100

10%

Network Requests Diagram

biologie-schule.de

420 ms

biologie-schule.de

411 ms

www.biologie-schule.de

732 ms

style_screen.css

285 ms

js

68 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 31% of them (17 requests) were addressed to the original Biologie-schule.de, 16% (9 requests) were made to Pagead2.googlesyndication.com and 15% (8 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (732 ms) belongs to the original domain Biologie-schule.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 84.4 kB (12%)

Content Size

701.2 kB

After Optimization

616.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Biologie-schule.de main page is 701.2 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. 40% of websites need less resources to load. Javascripts take 572.8 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 30.6 kB

  • Original 38.8 kB
  • After minification 33.9 kB
  • After compression 8.2 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 4.8 kB, which is 12% 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 30.6 kB or 79% of the original size.

Image Optimization

-38%

Potential reduce by 20.7 kB

  • Original 55.0 kB
  • After minification 34.3 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, Biologie Schule needs image optimization as it can save up to 20.7 kB or 38% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 2.2 kB

  • Original 572.8 kB
  • After minification 572.7 kB
  • After compression 570.5 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. This website has mostly compressed JavaScripts.

CSS Optimization

-89%

Potential reduce by 30.9 kB

  • Original 34.7 kB
  • After minification 25.1 kB
  • After compression 3.8 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. Biologie-schule.de needs all CSS files to be minified and compressed as it can save up to 30.9 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (53%)

Requests Now

49

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Biologie Schule. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

biologie-schule.de accessibility score

83

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.

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

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>).

Best Practices

biologie-schule.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

General

Impact

Issue

High

Page has valid source maps

SEO Factors

biologie-schule.de SEO score

77

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Biologie-schule.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 Biologie-schule.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

Open Graph description is not detected on the main page of Biologie Schule. 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: