3.9 sec in total
333 ms
3.2 sec
376 ms
Click here to check amazing ZdK content for Germany. Otherwise, check out these important facts you probably never knew about zdk.de
Visit zdk.deWe analyzed Zdk.de page load time and found that the first response time was 333 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
zdk.de performance score
name
value
score
weighting
Value3.8 s
27/100
10%
Value3.8 s
54/100
25%
Value8.5 s
18/100
10%
Value1,860 ms
9/100
30%
Value0.221
56/100
15%
Value17.6 s
4/100
10%
333 ms
453 ms
366 ms
197 ms
197 ms
Our browser made a total of 129 requests to load all elements on the main page. We found that 43% of them (55 requests) were addressed to the original Zdk.de, 29% (37 requests) were made to Static.xx.fbcdn.net and 5% (6 requests) were made to External.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (882 ms) belongs to the original domain Zdk.de.
Page size can be reduced by 145.0 kB (15%)
951.6 kB
806.6 kB
In fact, the total size of Zdk.de main page is 951.6 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 770.0 kB which makes up the majority of the site volume.
Potential reduce by 116.4 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 77.8 kB, which is 60% 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 116.4 kB or 90% of the original size.
Potential reduce by 1.9 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. ZdK images are well optimized though.
Potential reduce by 50 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 26.7 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. Zdk.de needs all CSS files to be minified and compressed as it can save up to 26.7 kB or 85% of the original size.
Number of requests can be reduced by 58 (46%)
127
69
The browser has sent 127 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZdK. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.
zdk.de
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zdk.de accessibility score
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
<frame> or <iframe> elements do not have a title
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
Some elements have a [tabindex] value greater than 0
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a valid value for its [lang] attribute.
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
List items (<li>) are not contained within <ul> or <ol> parent elements.
zdk.de best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
zdk.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
DE
DE
N/A
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zdk.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 Zdk.de main page’s claimed encoding is . 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.
zdk.de
Open Graph description is not detected on the main page of ZdK. 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: