Tools & Wizards About Us
lernwolf.de screenshot

Report Summary

  • 82

    Performance

    Renders faster than
    87% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

lernwolf.de

Kostenlose Übungen & Arbeitsblätter für die Schule - lernwolf.de

Page Load Speed

2.9 sec in total

First Response

233 ms

Resources Loaded

2.1 sec

Page Rendered

505 ms

lernwolf.de screenshot

About Website

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

Kostenlose Übungen & Aufgaben mit Lösungen für die Grundschule ✓Spezialisiert auf Bayern. ✓Unbegrenzt herunterladen

Visit lernwolf.de

Key Findings

We analyzed Lernwolf.de page load time and found that the first response time was 233 ms and then it took 2.6 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

lernwolf.de performance score

82

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

73/100

10%

LCP (Largest Contentful Paint)

Value2.3 s

93/100

25%

SI (Speed Index)

Value5.5 s

55/100

10%

TBT (Total Blocking Time)

Value300 ms

79/100

30%

CLS (Cumulative Layout Shift)

Value0.069

96/100

15%

TTI (Time to Interactive)

Value4.5 s

82/100

10%

Network Requests Diagram

lernwolf.de

233 ms

www.lernwolf.de

540 ms

columns.css

113 ms

font.css

331 ms

efc53b08d91a.css

516 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that all of those requests were addressed to Lernwolf.de and no external sources were called. The less responsive or slowest element that took the longest time to load (907 ms) belongs to the original domain Lernwolf.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 122.6 kB (14%)

Content Size

878.8 kB

After Optimization

756.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lernwolf.de main page is 878.8 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. 35% of websites need less resources to load. Images take 496.1 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 38.4 kB

  • Original 44.7 kB
  • After minification 27.9 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. This page needs HTML code to be minified as it can gain 16.9 kB, which is 38% 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 38.4 kB or 86% of the original size.

Image Optimization

-4%

Potential reduce by 18.2 kB

  • Original 496.1 kB
  • After minification 477.9 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. Lernwolf images are well optimized though.

JavaScript Optimization

-21%

Potential reduce by 55.7 kB

  • Original 263.1 kB
  • After minification 263.1 kB
  • After compression 207.4 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 55.7 kB or 21% of the original size.

CSS Optimization

-14%

Potential reduce by 10.3 kB

  • Original 74.8 kB
  • After minification 74.8 kB
  • After compression 64.5 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. Lernwolf.de needs all CSS files to be minified and compressed as it can save up to 10.3 kB or 14% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

18

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lernwolf. According to our analytics all requests are already optimized.

Network Requests Diagram

lernwolf.de

lernwolf.de

233 ms

www.lernwolf.de

www.lernwolf.de

540 ms

columns.css

columns.css

113 ms

font.css

font.css

331 ms

efc53b08d91a.css

efc53b08d91a.css

516 ms

lernwolf-wide-de-DE.png

lernwolf-wide-de-DE.png

621 ms

dummy.png

dummy.png

317 ms

check.png

check.png

305 ms

lernwolf_url-de-DE.png

lernwolf_url-de-DE.png

433 ms

5458388987cd.js

5458388987cd.js

907 ms

custom.js

custom.js

459 ms

app.js

app.js

462 ms

icn_kopf.png

icn_kopf.png

617 ms

catlux-logo-grey.png

catlux-logo-grey.png

762 ms

whitey.png

whitey.png

114 ms

loader.gif

loader.gif

111 ms

px1.jpg

px1.jpg

207 ms

ft-bg.jpg

ft-bg.jpg

216 ms

contact-map.png

contact-map.png

220 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

432 ms

timer.png

timer.png

117 ms

lernwolf-header.jpg

lernwolf-header.jpg

309 ms

Accessibility Review

lernwolf.de accessibility score

77

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

lernwolf.de best practices score

75

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

SEO Factors

lernwolf.de SEO score

83

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    N/A

  • Encoding

    UTF-8

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

lernwolf.de

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