Report Summary

  • 39

    Performance

    Renders faster than
    60% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 85% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 99

    SEO

    Google-friendlier than
    94% of websites

lern-online.net

Kostenlos Online Lernen mit Erfolg - Lern-Online.net

Page Load Speed

3.2 sec in total

First Response

331 ms

Resources Loaded

2.6 sec

Page Rendered

226 ms

lern-online.net screenshot

About Website

Welcome to lern-online.net homepage info - get ready to check Lern Online best content for Germany right away, or after learning these important things about lern-online.net

Lern-Online.net bietet Schülern & Studenten ✅ Erläuterungen & ✅ Videos. Kostenlose Übungen mit Lösungen helfen beim Online Lernen Erfolg.

Visit lern-online.net

Key Findings

We analyzed Lern-online.net page load time and found that the first response time was 331 ms and then it took 2.9 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

lern-online.net performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

46/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

50/100

25%

SI (Speed Index)

Value5.7 s

51/100

10%

TBT (Total Blocking Time)

Value1,120 ms

23/100

30%

CLS (Cumulative Layout Shift)

Value0.237

52/100

15%

TTI (Time to Interactive)

Value11.3 s

19/100

10%

Network Requests Diagram

lern-online.net

331 ms

www.lern-online.net

413 ms

bootstrap.min.css

8 ms

website.css

294 ms

animate.min.css

391 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 52% of them (35 requests) were addressed to the original Lern-online.net, 9% (6 requests) were made to Pagead2.googlesyndication.com and 6% (4 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (702 ms) relates to the external source Encrypted-tbn2.gstatic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 258.6 kB (69%)

Content Size

373.3 kB

After Optimization

114.6 kB

In fact, the total size of Lern-online.net main page is 373.3 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. CSS take 202.3 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 18.1 kB

  • Original 24.4 kB
  • After minification 22.8 kB
  • After compression 6.3 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 18.1 kB or 74% of the original size.

Image Optimization

-3%

Potential reduce by 812 B

  • Original 27.1 kB
  • After minification 26.3 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. Lern Online images are well optimized though.

JavaScript Optimization

-56%

Potential reduce by 66.5 kB

  • Original 119.5 kB
  • After minification 119.3 kB
  • After compression 53.0 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 66.5 kB or 56% of the original size.

CSS Optimization

-86%

Potential reduce by 173.2 kB

  • Original 202.3 kB
  • After minification 201.2 kB
  • After compression 29.1 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. Lern-online.net needs all CSS files to be minified and compressed as it can save up to 173.2 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 49 (82%)

Requests Now

60

After Optimization

11

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lern Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

lern-online.net accessibility score

94

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

lern-online.net 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

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

lern-online.net SEO score

99

Search Engine Optimization Advices

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

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lern-online.net can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it matches the claimed language. Our system also found out that Lern-online.net 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 Lern Online. 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: