Tools & Wizards About Us

Report Summary

  • 0

    Performance

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

biologie-lexikon.de

Biologie-Lexikon für Schule, Studium, Ausbildung

Page Load Speed

1.5 sec in total

First Response

265 ms

Resources Loaded

1.2 sec

Page Rendered

70 ms

About Website

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

Biologie-Lexikon: Fachbegriffe der Biologie (Genetik, Ökologie, Evolution, Zellbiologie etc.) im Lexikon online erklärt + Forum, Online-Tests, Fotos, Biolinks (kostenlos)

Visit biologie-lexikon.de

Key Findings

We analyzed Biologie-lexikon.de page load time and found that the first response time was 265 ms and then it took 1.2 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

biologie-lexikon.de performance score

0

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0

0/100

10%

LCP (Largest Contentful Paint)

Value0

0/100

25%

SI (Speed Index)

Value0

0/100

10%

TBT (Total Blocking Time)

Value0

0/100

30%

CLS (Cumulative Layout Shift)

Value0.643

9/100

15%

TTI (Time to Interactive)

Value0

0/100

10%

Network Requests Diagram

biologie-lexikon.de

265 ms

www.biologie-lexikon.de

190 ms

topover.html

94 ms

left.html

182 ms

main.html

197 ms

Our browser made a total of 12 requests to load all elements on the main page. We found that 75% of them (9 requests) were addressed to the original Biologie-lexikon.de, 25% (3 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (265 ms) belongs to the original domain Biologie-lexikon.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.4 kB (1%)

Content Size

297.7 kB

After Optimization

295.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Biologie-lexikon.de main page is 297.7 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 10% of websites need less resources to load. Javascripts take 253.1 kB which makes up the majority of the site volume.

HTML Optimization

-57%

Potential reduce by 1.6 kB

  • Original 2.7 kB
  • After minification 2.7 kB
  • After compression 1.2 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. 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 1.6 kB or 57% of the original size.

Image Optimization

-2%

Potential reduce by 678 B

  • Original 40.8 kB
  • After minification 40.2 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. Biologie Lexikon images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 42 B

  • Original 253.1 kB
  • After minification 253.1 kB
  • After compression 253.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-11%

Potential reduce by 114 B

  • Original 1.0 kB
  • After minification 1.0 kB
  • After compression 934 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. Biologie-lexikon.de needs all CSS files to be minified and compressed as it can save up to 114 B or 11% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

10

After Optimization

10

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 10 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Biologie Lexikon. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

biologie-lexikon.de accessibility score

68

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

<frame> or <iframe> elements do not have a title

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

biologie-lexikon.de best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Page has valid source maps

SEO Factors

biologie-lexikon.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

robots.txt is not valid

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

    ISO-8859-1

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