Tools & Wizards About Us
zdfsport.de screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

zdfsport.de

sportstudio - Sport im ZDF online streamen und schauen! - ZDFmediathek

Page Load Speed

3.7 sec in total

First Response

621 ms

Resources Loaded

2 sec

Page Rendered

1.1 sec

zdfsport.de screenshot

About Website

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

Aktuelle Sport-News, Livestreams, Liveticker, Ergebnisse, Hintergründe und Sportdokus. Sportstudio verpasst? Aktuelle Sendungen einfach online schauen

Visit zdfsport.de

Key Findings

We analyzed Zdfsport.de page load time and found that the first response time was 621 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

zdfsport.de performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.1 s

3/100

10%

LCP (Largest Contentful Paint)

Value9.0 s

1/100

25%

SI (Speed Index)

Value6.3 s

42/100

10%

TBT (Total Blocking Time)

Value180 ms

92/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.3 s

31/100

10%

Network Requests Diagram

sport

621 ms

zdfCMP.js

425 ms

abGroupLibrary.js

237 ms

styles.css

438 ms

_app-polyfills.pkg.js

113 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Zdfsport.de, 5% (1 request) were made to Cmp2.zdf.de and 5% (1 request) were made to Tag.aticdn.net. The less responsive or slowest element that took the longest time to load (780 ms) relates to the external source Zdf.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.3 MB (76%)

Content Size

3.0 MB

After Optimization

730.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zdfsport.de main page is 3.0 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. 55% of websites need less resources to load. Javascripts take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 1.2 MB

  • Original 1.3 MB
  • After minification 1.1 MB
  • After compression 153.5 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 230.7 kB, which is 17% 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 1.2 MB or 88% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 23.7 kB
  • After minification 23.7 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. ZDF Sport images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 1.1 MB

  • Original 1.6 MB
  • After minification 1.6 MB
  • After compression 442.8 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 1.1 MB or 72% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 110.1 kB
  • After minification 110.1 kB
  • After compression 110.1 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. Zdfsport.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 4 (50%)

Requests Now

8

After Optimization

4

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZDF Sport. 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 JavaScripts and as a result speed up the page load time.

Network Requests Diagram

sport

sport

621 ms

zdfCMP.js

zdfCMP.js

425 ms

abGroupLibrary.js

abGroupLibrary.js

237 ms

styles.css

styles.css

438 ms

_app-polyfills.pkg.js

_app-polyfills.pkg.js

113 ms

_crucial-behavior.pkg.js

_crucial-behavior.pkg.js

88 ms

_app-behavior.pkg.js

_app-behavior.pkg.js

704 ms

det.png

det.png

267 ms

piano-analytics-6.10.0.js

piano-analytics-6.10.0.js

78 ms

off.js

off.js

266 ms

ZDFType-Light.ttf

ZDFType-Light.ttf

228 ms

ZDFType-ExtraLight.ttf

ZDFType-ExtraLight.ttf

599 ms

ZDFType-Thin.ttf

ZDFType-Thin.ttf

599 ms

ZDFType-Regular.ttf

ZDFType-Regular.ttf

598 ms

ZDFType-Medium.ttf

ZDFType-Medium.ttf

599 ms

ZDFType-Bold.ttf

ZDFType-Bold.ttf

780 ms

ZDFType-SemiBold.ttf

ZDFType-SemiBold.ttf

773 ms

ZDFType-Heavy.ttf

ZDFType-Heavy.ttf

778 ms

ZDFType-Black.ttf

ZDFType-Black.ttf

779 ms

zdf-iconfont.woff

zdf-iconfont.woff

776 ms

Accessibility Review

zdfsport.de accessibility score

87

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.

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

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

Best Practices

zdfsport.de best practices score

67

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

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

zdfsport.de SEO score

100

Search Engine Optimization Advices

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 Zdfsport.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 Zdfsport.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

zdfsport.de

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