Tools & Wizards About Us
stark-verlag.de screenshot

Report Summary

  • 6

    Performance

    Renders faster than
    21% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

stark-verlag.de

STARK Verlag - Ihr Onlineshop für hochwertige Lernmaterialien und Prüfungsvorbereitung

Page Load Speed

4.8 sec in total

First Response

336 ms

Resources Loaded

4.1 sec

Page Rendered

327 ms

stark-verlag.de screenshot

About Website

Click here to check amazing STARK Verlag content for Germany. Otherwise, check out these important facts you probably never knew about stark-verlag.de

Entdecken Sie den neuen Onlineshop des STARK Verlags - Ihre Quelle für hochwertige Lernmaterialien, Bücher und Prüfungsvorbereitung. Finden Sie speziell auf die Lehrpläne der Bundesländer abgestimmte ...

Visit stark-verlag.de

Key Findings

We analyzed Stark-verlag.de page load time and found that the first response time was 336 ms and then it took 4.4 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

stark-verlag.de performance score

6

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

35/100

10%

LCP (Largest Contentful Paint)

Value15.3 s

0/100

25%

SI (Speed Index)

Value9.7 s

11/100

10%

TBT (Total Blocking Time)

Value3,130 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value3.275

0/100

15%

TTI (Time to Interactive)

Value18.1 s

3/100

10%

Network Requests Diagram

stark-verlag.de

336 ms

www.stark-verlag.de

1413 ms

3stark.css

293 ms

stark-shop.css

533 ms

mootools-core.js

770 ms

Our browser made a total of 109 requests to load all elements on the main page. We found that 97% of them (106 requests) were addressed to the original Stark-verlag.de, 2% (2 requests) were made to Ssl.google-analytics.com and 1% (1 request) were made to Pedaff.webpartner.de. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Stark-verlag.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 353.4 kB (27%)

Content Size

1.3 MB

After Optimization

949.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Stark-verlag.de main page is 1.3 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. 45% of websites need less resources to load. Images take 908.3 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 60.5 kB

  • Original 73.4 kB
  • After minification 64.8 kB
  • After compression 12.8 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 8.5 kB, which is 12% 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 60.5 kB or 83% of the original size.

Image Optimization

-7%

Potential reduce by 59.6 kB

  • Original 908.3 kB
  • After minification 848.7 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. STARK Verlag images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 192.7 kB

  • Original 272.5 kB
  • After minification 237.3 kB
  • After compression 79.7 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 192.7 kB or 71% of the original size.

CSS Optimization

-83%

Potential reduce by 40.6 kB

  • Original 48.6 kB
  • After minification 37.2 kB
  • After compression 8.1 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. Stark-verlag.de needs all CSS files to be minified and compressed as it can save up to 40.6 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 38 (36%)

Requests Now

107

After Optimization

69

  • Images
  • JavaScript
  • CSS

The browser has sent 107 CSS, Javascripts, AJAX and image requests in order to completely render the main page of STARK 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 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

stark-verlag.de

stark-verlag.de

336 ms

www.stark-verlag.de

www.stark-verlag.de

1413 ms

3stark.css

3stark.css

293 ms

stark-shop.css

stark-shop.css

533 ms

mootools-core.js

mootools-core.js

770 ms

mootools-more.js

mootools-more.js

793 ms

startreihen_sv.js

startreihen_sv.js

296 ms

navigation.js

navigation.js

398 ms

dhtmltooltip.js

dhtmltooltip.js

342 ms

accordion_2015.js

accordion_2015.js

245 ms

awstats_misc_tracker.js

awstats_misc_tracker.js

314 ms

stark_shop_hg.gif

stark_shop_hg.gif

100 ms

stark_shop_head.gif

stark_shop_head.gif

99 ms

stark_shop_hg_footer.gif

stark_shop_hg_footer.gif

106 ms

shim.gif

shim.gif

101 ms

warenkorb-shop.png

warenkorb-shop.png

196 ms

versandkostenfrei.png

versandkostenfrei.png

205 ms

reihe21.png

reihe21.png

311 ms

reihe28.png

reihe28.png

311 ms

reihe91.png

reihe91.png

305 ms

reihe90.png

reihe90.png

311 ms

reihe7.png

reihe7.png

382 ms

reihe8.png

reihe8.png

386 ms

reihe152.png

reihe152.png

401 ms

reihe2.png

reihe2.png

414 ms

reihe142.png

reihe142.png

416 ms

reihe86.png

reihe86.png

430 ms

reihe87.png

reihe87.png

490 ms

reihe164.png

reihe164.png

489 ms

reihe103.png

reihe103.png

506 ms

reihe138.png

reihe138.png

525 ms

reihe149.png

reihe149.png

515 ms

reihe165.png

reihe165.png

533 ms

reihe137.png

reihe137.png

598 ms

reihe133.png

reihe133.png

592 ms

reihe56.png

reihe56.png

614 ms

reihe57.png

reihe57.png

635 ms

reihe134.png

reihe134.png

626 ms

reihe135.png

reihe135.png

637 ms

reihe150.png

reihe150.png

806 ms

reihe92.png

reihe92.png

815 ms

reihe118.png

reihe118.png

813 ms

reihe151.png

reihe151.png

813 ms

reihe23.png

reihe23.png

811 ms

reihe139.png

reihe139.png

810 ms

reihe4.png

reihe4.png

821 ms

zahlarten.png

zahlarten.png

812 ms

facebook_icon.gif

facebook_icon.gif

825 ms

twitter.png

twitter.png

827 ms

youtubepfeil.gif

youtubepfeil.gif

735 ms

mrwong.gif

mrwong.gif

712 ms

oneview.gif

oneview.gif

761 ms

favoriten.gif

favoriten.gif

737 ms

ga.js

ga.js

58 ms

trackjs.php

trackjs.php

751 ms

linkarena.gif

linkarena.gif

708 ms

yahoo.gif

yahoo.gif

714 ms

google.gif

google.gif

722 ms

alltagz.gif

alltagz.gif

723 ms

__utm.gif

__utm.gif

13 ms

seekxl.gif

seekxl.gif

725 ms

stark03_start_starkplus_2015.png

stark03_start_starkplus_2015.png

734 ms

stark03_start_mwst_ebundles(1).png

stark03_start_mwst_ebundles(1).png

719 ms

93486.png

93486.png

714 ms

91418.png

91418.png

723 ms

94881.png

94881.png

816 ms

82452V.png

82452V.png

723 ms

8154021.png

8154021.png

759 ms

85851.png

85851.png

742 ms

9842011.png

9842011.png

737 ms

914701.png

914701.png

739 ms

25B401.png

25B401.png

789 ms

9950404.png

9950404.png

759 ms

login-button.png

login-button.png

761 ms

reihen_hg.png

reihen_hg.png

739 ms

reihen_pfeil_a.png

reihen_pfeil_a.png

729 ms

reihen_pfeil_b.png

reihen_pfeil_b.png

732 ms

stark_shop_shadow_nav.gif

stark_shop_shadow_nav.gif

788 ms

schnellsuche_hg.png

schnellsuche_hg.png

642 ms

suche_abschicken.png

suche_abschicken.png

639 ms

plus_shop.png

plus_shop.png

647 ms

minus_shop.png

minus_shop.png

645 ms

nav_hg_b.png

nav_hg_b.png

651 ms

stark_shop_dotsnav_red.png

stark_shop_dotsnav_red.png

707 ms

nav_hg_a_last.png

nav_hg_a_last.png

644 ms

social_media_hg_2.png

social_media_hg_2.png

642 ms

social_media_hg_1.png

social_media_hg_1.png

647 ms

stark_shop_dotsnav_red_3.png

stark_shop_dotsnav_red_3.png

643 ms

block_hg.png

block_hg.png

645 ms

buchtitel_hg.png

buchtitel_hg.png

697 ms

bildschatten.png

bildschatten.png

641 ms

pearson_footer.png

pearson_footer.png

641 ms

awstats_misc_tracker.js

awstats_misc_tracker.js

645 ms

Stark-digital_Logo_startseite.png

Stark-digital_Logo_startseite.png

393 ms

Slider_Stark_digital.png

Slider_Stark_digital.png

675 ms

stark03_head_subnav_bg.gif

stark03_head_subnav_bg.gif

101 ms

empfehlen_h.gif

empfehlen_h.gif

103 ms

mein_warenkorb_h.gif

mein_warenkorb_h.gif

97 ms

merkzettel_h.gif

merkzettel_h.gif

95 ms

pfeil_h.gif

pfeil_h.gif

98 ms

pfeilkurz_h.gif

pfeilkurz_h.gif

95 ms

warenkorb_h.gif

warenkorb_h.gif

195 ms

pfeil_h_rot.gif

pfeil_h_rot.gif

189 ms

mein_warenkorb_h_rot.gif

mein_warenkorb_h_rot.gif

193 ms

mein_warenkorb.gif

mein_warenkorb.gif

194 ms

warenkorb.gif

warenkorb.gif

201 ms

merkzettel.gif

merkzettel.gif

194 ms

empfehlen.gif

empfehlen.gif

286 ms

pfeilkurz.gif

pfeilkurz.gif

287 ms

Accessibility Review

stark-verlag.de accessibility score

76

Accessibility Issues

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.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

stark-verlag.de best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

stark-verlag.de SEO score

79

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

High

Page is blocked from indexing

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

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stark-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 Stark-verlag.de main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

stark-verlag.de

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