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zts.de screenshot

Report Summary

  • 76

    Performance

    Renders faster than
    84% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

zts.de

ZTS GmbH

Page Load Speed

3.5 sec in total

First Response

462 ms

Resources Loaded

2.5 sec

Page Rendered

535 ms

zts.de screenshot

About Website

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

Visit zts.de

Key Findings

We analyzed Zts.de page load time and found that the first response time was 462 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

zts.de performance score

76

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

39/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

47/100

25%

SI (Speed Index)

Value4.8 s

68/100

10%

TBT (Total Blocking Time)

Value100 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.9 s

89/100

10%

Network Requests Diagram

www.zts.de

462 ms

imported-fonts.css

424 ms

effect.min.css

390 ms

material-icons.css

418 ms

framework.min.css

512 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 16% of them (6 requests) were addressed to the original Zts.de, 45% (17 requests) were made to Layout.verwaltungsportal.de and 16% (6 requests) were made to Fonts.verwaltungsportal.de. The less responsive or slowest element that took the longest time to load (786 ms) relates to the external source Daten.verwaltungsportal.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 68.3 kB (11%)

Content Size

615.2 kB

After Optimization

546.9 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Zts.de main page is 615.2 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. Images take 545.5 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 37.6 kB

  • Original 43.9 kB
  • After minification 38.0 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 5.9 kB, which is 13% 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 37.6 kB or 86% of the original size.

Image Optimization

-5%

Potential reduce by 29.1 kB

  • Original 545.5 kB
  • After minification 516.5 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. ZTS images are well optimized though.

CSS Optimization

-6%

Potential reduce by 1.6 kB

  • Original 25.8 kB
  • After minification 25.8 kB
  • After compression 24.2 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. Zts.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 17 (53%)

Requests Now

32

After Optimization

15

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZTS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.zts.de

www.zts.de

462 ms

imported-fonts.css

imported-fonts.css

424 ms

effect.min.css

effect.min.css

390 ms

material-icons.css

material-icons.css

418 ms

framework.min.css

framework.min.css

512 ms

layout.css

layout.css

420 ms

custom_style.css

custom_style.css

422 ms

portalStyle.css

portalStyle.css

421 ms

browser.min.css

browser.min.css

483 ms

portuna-fancybox.css

portuna-fancybox.css

97 ms

portal.min.js

portal.min.js

404 ms

navigation.js

navigation.js

285 ms

dynnav14571_de.min.js

dynnav14571_de.min.js

303 ms

hashscroll.min.js

hashscroll.min.js

285 ms

98 ms

background-overlay.svg

background-overlay.svg

98 ms

ZTS_LOGO_Final_hochaufl_send_.png

ZTS_LOGO_Final_hochaufl_send_.png

655 ms

unternehmen.jpg

unternehmen.jpg

523 ms

deutsch.png

deutsch.png

100 ms

english.png

english.png

100 ms

sendlink.gif

sendlink.gif

100 ms

print.gif

print.gif

99 ms

vernetzt.png

vernetzt.png

100 ms

existenzgruender.jpg

existenzgruender.jpg

527 ms

schule.jpg

schule.jpg

622 ms

netzwerke.jpg

netzwerke.jpg

528 ms

kommunen.jpg

kommunen.jpg

528 ms

bildung.jpg

bildung.jpg

530 ms

jost-v15-latin-regular.woff

jost-v15-latin-regular.woff

111 ms

jost-v15-latin-500.woff

jost-v15-latin-500.woff

264 ms

jost-v15-latin-600.woff

jost-v15-latin-600.woff

217 ms

jost-v15-latin-700.woff

jost-v15-latin-700.woff

402 ms

lupe-icon.png

lupe-icon.png

173 ms

zeitung.jpg

zeitung.jpg

786 ms

MaterialIcons-Regular.woff

MaterialIcons-Regular.woff

429 ms

zahnraeder.jpg

zahnraeder.jpg

617 ms

kalender-icon.png

kalender-icon.png

140 ms

newsletter-icon.png

newsletter-icon.png

123 ms

Accessibility Review

zts.de accessibility score

82

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

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

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

zts.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

SEO Factors

zts.de SEO score

75

Search Engine Optimization Advices

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

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 Zts.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 Zts.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

zts.de

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