Tools & Wizards About Us
z.de screenshot

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 81

    SEO

    Google-friendlier than
    42% of websites

z.de

Shopping von A bis Z - Ihr Preisvergleich | Shopping – Elektronik, Computer, Reisen, Beauty, Audio

Page Load Speed

2.1 sec in total

First Response

301 ms

Resources Loaded

1.6 sec

Page Rendered

180 ms

z.de screenshot

About Website

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

Partyzelt 3x4m PE 180g/m² weiß wasserdicht Gartenzelt, Festzelt, Pavillon, Fernsehsessel Durham, TV Sessel Relaxsessel Liegesessel, Kunstleder ~ coffee, Relax-Bürostuhl HWC-D25 XXL, Schreibtischstuhl ...

Visit z.de

Key Findings

We analyzed Z.de page load time and found that the first response time was 301 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

z.de performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value6.2 s

11/100

25%

SI (Speed Index)

Value21.2 s

0/100

10%

TBT (Total Blocking Time)

Value60 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value6.1 s

63/100

10%

Network Requests Diagram

z.de

301 ms

www.z.de

390 ms

style_preis.css

100 ms

ga.js

6 ms

main.js

184 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 96% of them (49 requests) were addressed to the original Z.de, 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (556 ms) belongs to the original domain Z.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 108.1 kB (67%)

Content Size

161.0 kB

After Optimization

52.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Z.de main page is 161.0 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. 20% of websites need less resources to load. CSS take 68.8 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 31.8 kB

  • Original 39.2 kB
  • After minification 38.7 kB
  • After compression 7.3 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 31.8 kB or 81% of the original size.

Image Optimization

-25%

Potential reduce by 4.6 kB

  • Original 18.3 kB
  • After minification 13.7 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. Obviously, Z needs image optimization as it can save up to 4.6 kB or 25% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-38%

Potential reduce by 13.3 kB

  • Original 34.7 kB
  • After minification 32.6 kB
  • After compression 21.4 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 13.3 kB or 38% of the original size.

CSS Optimization

-85%

Potential reduce by 58.4 kB

  • Original 68.8 kB
  • After minification 62.3 kB
  • After compression 10.5 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. Z.de needs all CSS files to be minified and compressed as it can save up to 58.4 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (76%)

Requests Now

49

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 49 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Z. 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

z.de

z.de

301 ms

www.z.de

www.z.de

390 ms

style_preis.css

style_preis.css

100 ms

ga.js

ga.js

6 ms

main.js

main.js

184 ms

sbookmark.js

sbookmark.js

185 ms

rounded.css

rounded.css

95 ms

buttons.css

buttons.css

176 ms

anylinkmenu.css

anylinkmenu.css

179 ms

featured.css

featured.css

182 ms

top_links_divider.gif

top_links_divider.gif

97 ms

cart-bg.gif

cart-bg.gif

94 ms

1.gif

1.gif

92 ms

7.gif

7.gif

94 ms

5.gif

5.gif

98 ms

14.gif

14.gif

92 ms

11.gif

11.gif

181 ms

13.gif

13.gif

182 ms

16.gif

16.gif

186 ms

9.gif

9.gif

186 ms

header_block_border_top.jpg

header_block_border_top.jpg

178 ms

head_block_border_left.jpg

head_block_border_left.jpg

185 ms

site_block_border_right.jpg

site_block_border_right.jpg

262 ms

header_block_corner_left_top.jpg

header_block_corner_left_top.jpg

263 ms

header_block_corner_right_top.jpg

header_block_corner_right_top.jpg

270 ms

header_block_bg.png

header_block_bg.png

269 ms

logo.png

logo.png

270 ms

search-bg.gif

search-bg.gif

264 ms

site_block_border_left.gif

site_block_border_left.gif

329 ms

menu_block_border_top.gif

menu_block_border_top.gif

330 ms

menu_block_border_bot.gif

menu_block_border_bot.gif

339 ms

menu_block_border_left.gif

menu_block_border_left.gif

339 ms

menu_block_border_right.gif

menu_block_border_right.gif

339 ms

menu_block_corner_left_top.gif

menu_block_corner_left_top.gif

356 ms

menu_block_corner_left_bot.gif

menu_block_corner_left_bot.gif

419 ms

menu_block_corner_right_top.gif

menu_block_corner_right_top.gif

420 ms

menu_block_corner_right_bot.gif

menu_block_corner_right_bot.gif

430 ms

menu_divider.gif

menu_divider.gif

431 ms

breadcrumbs_bg.jpg

breadcrumbs_bg.jpg

430 ms

breadcrumbs_divider.gif

breadcrumbs_divider.gif

452 ms

title-tail.gif

title-tail.gif

508 ms

title-left_cat.jpg

title-left_cat.jpg

509 ms

title-right.jpg

title-right.jpg

521 ms

list1_bull.gif

list1_bull.gif

521 ms

bull1.gif

bull1.gif

523 ms

title3-bg.gif

title3-bg.gif

548 ms

__utm.gif

__utm.gif

13 ms

b3_boxhead_standard.gif

b3_boxhead_standard.gif

542 ms

footer_block_border_bot.gif

footer_block_border_bot.gif

543 ms

footer_block_corner_left_bot.gif

footer_block_corner_left_bot.gif

555 ms

footer_block_corner_right_bot.gif

footer_block_corner_right_bot.gif

556 ms

Accessibility Review

z.de accessibility score

72

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.

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 IDs are not unique

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Form elements do not have associated labels

High

Links do not have a discernible name

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

z.de best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

Page has valid source maps

SEO Factors

z.de SEO score

81

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

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 Z.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 Z.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

z.de

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