Tools & Wizards About Us
rheinwerk-verlag.de screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    60% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 69

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

rheinwerk-verlag.de

Rheinwerk – Der Verlag für IT, Design und Fotografie

Page Load Speed

4.3 sec in total

First Response

311 ms

Resources Loaded

3.2 sec

Page Rendered

762 ms

rheinwerk-verlag.de screenshot

About Website

Visit rheinwerk-verlag.de now to see the best up-to-date Rheinwerk Verlag content for Germany and also check out these interesting facts you probably never knew about rheinwerk-verlag.de

Rheinwerk ist der führende Verlag für IT, Design und Fotografie. Unsere Bücher helfen Einsteigern und Experten bei der Aus- und Weiterbildung.

Visit rheinwerk-verlag.de

Key Findings

We analyzed Rheinwerk-verlag.de page load time and found that the first response time was 311 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

rheinwerk-verlag.de performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value8.6 s

2/100

25%

SI (Speed Index)

Value7.9 s

23/100

10%

TBT (Total Blocking Time)

Value420 ms

66/100

30%

CLS (Cumulative Layout Shift)

Value0.141

79/100

15%

TTI (Time to Interactive)

Value10.2 s

26/100

10%

Network Requests Diagram

rheinwerk-verlag.de

311 ms

www.rheinwerk-verlag.de

775 ms

normalize.min.css

555 ms

lightbox.css

559 ms

main.css

861 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 6% of them (3 requests) were addressed to the original Rheinwerk-verlag.de, 55% (29 requests) were made to S3-eu-west-1.amazonaws.com and 30% (16 requests) were made to Static.rheinwerk-verlag.de. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source S3-eu-west-1.amazonaws.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 484.3 kB (31%)

Content Size

1.6 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rheinwerk-verlag.de main page is 1.6 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. 40% of websites need less resources to load. Images take 985.9 kB which makes up the majority of the site volume.

HTML Optimization

-92%

Potential reduce by 187.5 kB

  • Original 204.8 kB
  • After minification 97.9 kB
  • After compression 17.3 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 106.9 kB, which is 52% 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 187.5 kB or 92% of the original size.

Image Optimization

-0%

Potential reduce by 4.9 kB

  • Original 985.9 kB
  • After minification 981.0 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. Rheinwerk Verlag images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 82 B

  • Original 22.4 kB
  • After minification 22.4 kB
  • After compression 22.3 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

-80%

Potential reduce by 291.8 kB

  • Original 364.1 kB
  • After minification 360.8 kB
  • After compression 72.3 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. Rheinwerk-verlag.de needs all CSS files to be minified and compressed as it can save up to 291.8 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (20%)

Requests Now

49

After Optimization

39

  • Images
  • JavaScript
  • CSS

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rheinwerk Verlag. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

rheinwerk-verlag.de

rheinwerk-verlag.de

311 ms

www.rheinwerk-verlag.de

www.rheinwerk-verlag.de

775 ms

normalize.min.css

normalize.min.css

555 ms

lightbox.css

lightbox.css

559 ms

main.css

main.css

861 ms

require.config.js

require.config.js

565 ms

require.js

require.js

675 ms

modernizr.js

modernizr.js

667 ms

wgxpath.install.js

wgxpath.install.js

655 ms

analytics.js

analytics.js

113 ms

inspiration_grafiker_slider.jpg

inspiration_grafiker_slider.jpg

771 ms

onlinemarketing_slider.jpg

onlinemarketing_slider.jpg

806 ms

bibliothek_von_sap_slider.jpg

bibliothek_von_sap_slider.jpg

695 ms

2906_homepage_slider.jpg

2906_homepage_slider.jpg

618 ms

maker-lp_homepage_slider.jpg

maker-lp_homepage_slider.jpg

697 ms

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9783836230681_171_2d.jpg

616 ms

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9783836239295_171_2d.jpg

709 ms

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9783836237222_171_2d.jpg

786 ms

9783836237758_171_2d.jpg

9783836237758_171_2d.jpg

783 ms

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9783836239431_171_2d.jpg

788 ms

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9783836239554_171_2d.jpg

798 ms

m_Info_Ebook.jpg

m_Info_Ebook.jpg

835 ms

blende_8_neu_m.jpg

blende_8_neu_m.jpg

870 ms

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9783836236515_171_2d.jpg

956 ms

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957 ms

9783836241199_171_2d.jpg

9783836241199_171_2d.jpg

886 ms

9783836234733_171_2d.jpg

9783836234733_171_2d.jpg

977 ms

9783836227964_171_2d.jpg

9783836227964_171_2d.jpg

926 ms

9783836237604_171_2d.jpg

9783836237604_171_2d.jpg

962 ms

9783836234658_171_2d.jpg

9783836234658_171_2d.jpg

976 ms

9783836236546_171_2d.jpg

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1096 ms

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1123 ms

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1097 ms

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1098 ms

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9783836237956_171_2d.jpg

1110 ms

9783836239028_171_2d.jpg

9783836239028_171_2d.jpg

1098 ms

9783836234566_171_2d.jpg

9783836234566_171_2d.jpg

1133 ms

9783836229418_171_2d.jpg

9783836229418_171_2d.jpg

1167 ms

9783836229197_171_2d.jpg

9783836229197_171_2d.jpg

1173 ms

loading.gif

loading.gif

171 ms

global-icon-sa87ab096fa.png

global-icon-sa87ab096fa.png

171 ms

global-img-element-s81a75ede2f.png

global-img-element-s81a75ede2f.png

170 ms

shop-usps-detail-s02306d2f76.png

shop-usps-detail-s02306d2f76.png

170 ms

ehi_74.png

ehi_74.png

170 ms

knockout-latest.js

knockout-latest.js

243 ms

knockout.mapping-latest.js

knockout.mapping-latest.js

270 ms

main.js

main.js

925 ms

settings.js

settings.js

225 ms

ec.js

ec.js

16 ms

collect

collect

14 ms

collect

collect

84 ms

ga-audiences

ga-audiences

48 ms

welcome.js

welcome.js

173 ms

Accessibility Review

rheinwerk-verlag.de accessibility score

92

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

rheinwerk-verlag.de best practices score

69

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

Uses deprecated APIs

High

Missing source maps for large first-party JavaScript

SEO Factors

rheinwerk-verlag.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

Links are not crawlable

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 Rheinwerk-verlag.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 Rheinwerk-verlag.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

rheinwerk-verlag.de

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