Tools & Wizards About Us
kohlverlag.de screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

kohlverlag.de

Unterrichtsmaterial für Lehrer von Kohl-Verlag für erfolgreiches Unterrichten und Lernen

Page Load Speed

6.9 sec in total

First Response

241 ms

Resources Loaded

2.6 sec

Page Rendered

4 sec

kohlverlag.de screenshot

About Website

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

Unterrichtsmaterial für Lehrer von Kohl-Verlag bietet über 2000 Produkte mit Arbeitsblättern und Lernmaterialien für alle Altersstufen, Schularten und Fachbereiche in der Grundschule und Sekundarstufe...

Visit kohlverlag.de

Key Findings

We analyzed Kohlverlag.de page load time and found that the first response time was 241 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

kohlverlag.de performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

25/100

25%

SI (Speed Index)

Value4.0 s

80/100

10%

TBT (Total Blocking Time)

Value1,310 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.268

46/100

15%

TTI (Time to Interactive)

Value7.6 s

46/100

10%

Network Requests Diagram

kohlverlag.de

241 ms

www.kohlverlag.de

545 ms

all.css

204 ms

all.js

656 ms

Kohlverlag-Logo.png

95 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that all of those requests were addressed to Kohlverlag.de and no external sources were called. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Kohlverlag.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (7%)

Content Size

15.7 MB

After Optimization

14.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kohlverlag.de main page is 15.7 MB. 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 14.9 MB which makes up the majority of the site volume.

HTML Optimization

-93%

Potential reduce by 436.8 kB

  • Original 467.3 kB
  • After minification 232.4 kB
  • After compression 30.5 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 234.9 kB, which is 50% 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 436.8 kB or 93% of the original size.

Image Optimization

-5%

Potential reduce by 715.8 kB

  • Original 14.9 MB
  • After minification 14.2 MB

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. Kohl Verlag images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 226.3 kB
  • After minification 226.3 kB
  • After compression 226.3 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

-0%

Potential reduce by 0 B

  • Original 73.0 kB
  • After minification 73.0 kB
  • After compression 73.0 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. Kohlverlag.de has all CSS files already compressed.

Requests Breakdown

We found no issues to fix!

Requests Now

45

After Optimization

45

  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kohl Verlag. According to our analytics all requests are already optimized.

Network Requests Diagram

kohlverlag.de

kohlverlag.de

241 ms

www.kohlverlag.de

www.kohlverlag.de

545 ms

all.css

all.css

204 ms

all.js

all.js

656 ms

Kohlverlag-Logo.png

Kohlverlag-Logo.png

95 ms

startseite-neu-juni-24.webp

startseite-neu-juni-24.webp

282 ms

Design%20ohne%20Titel%20%2879%29.webp

Design%20ohne%20Titel%20%2879%29.webp

462 ms

11611.jpg

11611.jpg

836 ms

11601.jpg

11601.jpg

834 ms

11674.jpg

11674.jpg

1220 ms

10781.jpg

10781.jpg

476 ms

13038.jpg

13038.jpg

540 ms

12216.jpg

12216.jpg

1018 ms

12537.jpg

12537.jpg

592 ms

4.png

4.png

642 ms

5.png

5.png

690 ms

6.png

6.png

740 ms

13036.jpg

13036.jpg

811 ms

13020.jpg

13020.jpg

852 ms

15092.jpg

15092.jpg

934 ms

15089.jpg

15089.jpg

1019 ms

13077.jpg

13077.jpg

954 ms

13075.jpg

13075.jpg

977 ms

13076.jpg

13076.jpg

1046 ms

13091.jpg

13091.jpg

1140 ms

13067.jpg

13067.jpg

1092 ms

15085.jpg

15085.jpg

1209 ms

12919.jpg

12919.jpg

1137 ms

12733.jpg

12733.jpg

1170 ms

15087.jpg

15087.jpg

1203 ms

15088.jpg

15088.jpg

1252 ms

15086.jpg

15086.jpg

1251 ms

startseite_1.jpg

startseite_1.jpg

1268 ms

kapitelauszug-startseite.webp

kapitelauszug-startseite.webp

1298 ms

1.jpg

1.jpg

1313 ms

2.jpg

2.jpg

1326 ms

3.jpg

3.jpg

1372 ms

cms-clouds-divider-gray.svg

cms-clouds-divider-gray.svg

1344 ms

kohlverlag-seo-text.jpg

kohlverlag-seo-text.jpg

1305 ms

kohlverlag-seo-3.jpg

kohlverlag-seo-3.jpg

1308 ms

kohlverlag-seo-text2.jpg

kohlverlag-seo-text2.jpg

1128 ms

logo_dunkelblau_stressmentorin_bk_rgb_300dpi.png

logo_dunkelblau_stressmentorin_bk_rgb_300dpi.png

1073 ms

portrait.jpg

portrait.jpg

981 ms

23921.webp

23921.webp

994 ms

23920.jpg

23920.jpg

983 ms

swag_paypal_card.svg

swag_paypal_card.svg

937 ms

swag_paypal_sepa.svg

swag_paypal_sepa.svg

885 ms

Accessibility Review

kohlverlag.de accessibility score

67

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Best Practices

kohlverlag.de best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

kohlverlag.de SEO score

85

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

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 Kohlverlag.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 Kohlverlag.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

kohlverlag.de

Open Graph data is detected on the main page of Kohl Verlag. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: