Tools & Wizards About Us

Report Summary

  • 82

    Performance

    Renders faster than
    87% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

lehrklaenge.de

Lehrklaenge - grundlegende und weiterführende Musiktheorie

Page Load Speed

1.6 sec in total

First Response

278 ms

Resources Loaded

1.2 sec

Page Rendered

123 ms

About Website

Welcome to lehrklaenge.de homepage info - get ready to check Lehrklaenge best content for Germany right away, or after learning these important things about lehrklaenge.de

Onlinelehrgang Musiktheorie für Liebhaber oder zur ergänzenden Vorbereitung auf eine Aufnahmeprüfung. Mit vielen Grafiken und Klangbeispielen.

Visit lehrklaenge.de

Key Findings

We analyzed Lehrklaenge.de page load time and found that the first response time was 278 ms and then it took 1.3 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

lehrklaenge.de performance score

82

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

82/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

40/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value2.1 s

99/100

10%

Network Requests Diagram

lehrklaenge.de

278 ms

bootstrap.css

517 ms

accordion.css

216 ms

index.css

215 ms

navstyle.css

216 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that all of those requests were addressed to Lehrklaenge.de and no external sources were called. The less responsive or slowest element that took the longest time to load (902 ms) belongs to the original domain Lehrklaenge.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 284.5 kB (35%)

Content Size

819.5 kB

After Optimization

535.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lehrklaenge.de main page is 819.5 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 465.2 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 18.3 kB

  • Original 21.5 kB
  • After minification 16.4 kB
  • After compression 3.2 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 5.1 kB, which is 24% 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 18.3 kB or 85% of the original size.

Image Optimization

-0%

Potential reduce by 1.5 kB

  • Original 465.2 kB
  • After minification 463.7 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. Lehrklaenge images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 120.3 kB

  • Original 164.8 kB
  • After minification 143.1 kB
  • After compression 44.6 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 120.3 kB or 73% of the original size.

CSS Optimization

-86%

Potential reduce by 144.5 kB

  • Original 168.0 kB
  • After minification 139.8 kB
  • After compression 23.5 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. Lehrklaenge.de needs all CSS files to be minified and compressed as it can save up to 144.5 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (33%)

Requests Now

12

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lehrklaenge. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

lehrklaenge.de accessibility score

100

Accessibility Issues

Best Practices

lehrklaenge.de best practices score

67

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

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

SEO Factors

lehrklaenge.de SEO score

92

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 doesn't use legible font sizes

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 Lehrklaenge.de 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 Lehrklaenge.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 Lehrklaenge. 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: