5.6 sec in total
832 ms
2.9 sec
1.9 sec
Visit zdf.de now to see the best up-to-date Zdf content for Germany and also check out these interesting facts you probably never knew about zdf.de
Alle Videos und Livestreams in der ZDFmediathek anschauen – ständig verfügbar und interaktiv! Entdecken Sie Filme, Serien, Sportevents, Dokumentationen und vieles mehr!
Visit zdf.deWe analyzed Zdf.de page load time and found that the first response time was 832 ms and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
zdf.de performance score
name
value
score
weighting
Value7.2 s
1/100
10%
Value8.8 s
1/100
25%
Value7.6 s
26/100
10%
Value310 ms
77/100
30%
Value0
100/100
15%
Value10.6 s
23/100
10%
832 ms
413 ms
242 ms
438 ms
949 ms
Our browser made a total of 21 requests to load all elements on the main page. We found that 86% of them (18 requests) were addressed to the original Zdf.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 (1.1 sec) belongs to the original domain Zdf.de.
Page size can be reduced by 2.6 MB (75%)
3.5 MB
887.3 kB
In fact, the total size of Zdf.de main page is 3.5 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. HTML takes 2.7 MB which makes up the majority of the site volume.
Potential reduce by 2.5 MB
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 460.2 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 2.5 MB or 91% of the original size.
Potential reduce by 0 B
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 images are well optimized though.
Potential reduce by 130.1 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 130.1 kB or 23% of the original size.
Potential reduce by 0 B
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. Zdf.de has all CSS files already compressed.
Number of requests can be reduced by 4 (44%)
9
5
The browser has sent 9 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zdf. 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.
www.zdf.de
832 ms
zdfCMP.js
413 ms
abGroupLibrary.js
242 ms
styles.css
438 ms
_app-polyfills.pkg.js
949 ms
_crucial-behavior.pkg.js
149 ms
_app-behavior.pkg.js
943 ms
piano-analytics-6.10.0.js
131 ms
off.js
129 ms
avatar@3x.png
851 ms
det.png
1028 ms
ZDFType-Light.ttf
976 ms
ZDFType-ExtraLight.ttf
976 ms
ZDFType-Thin.ttf
976 ms
ZDFType-Regular.ttf
975 ms
ZDFType-Medium.ttf
1081 ms
ZDFType-Bold.ttf
979 ms
ZDFType-SemiBold.ttf
977 ms
ZDFType-Heavy.ttf
978 ms
ZDFType-Black.ttf
978 ms
zdf-iconfont.woff
975 ms
zdf.de accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<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
ARIA IDs are not unique
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
Image elements do not have [alt] attributes
zdf.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
Issues were logged in the Issues panel in Chrome Devtools
zdf.de SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
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
Document uses legible font sizes
Tap targets are not sized appropriately
DE
DE
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zdf.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 Zdf.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.
zdf.de
Open Graph data is detected on the main page of Zdf. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: