2.4 sec in total
378 ms
1.8 sec
166 ms
Welcome to zkrd.de homepage info - get ready to check ZKRD best content for Germany right away, or after learning these important things about zkrd.de
Als Knotenpunkt bei der Spendersuche steuert das ZKRD das Matching von Patienten und Stammzellspendern weltweit.
Visit zkrd.deWe analyzed Zkrd.de page load time and found that the first response time was 378 ms and then it took 2 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.
zkrd.de performance score
name
value
score
weighting
Value3.4 s
38/100
10%
Value10.1 s
0/100
25%
Value13.5 s
2/100
10%
Value1,860 ms
9/100
30%
Value0.41
24/100
15%
Value11.1 s
20/100
10%
378 ms
187 ms
735 ms
461 ms
471 ms
Our browser made a total of 32 requests to load all elements on the main page. We found that all of those requests were addressed to Zkrd.de and no external sources were called. The less responsive or slowest element that took the longest time to load (735 ms) belongs to the original domain Zkrd.de.
Page size can be reduced by 150.0 kB (46%)
322.5 kB
172.6 kB
In fact, the total size of Zkrd.de main page is 322.5 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. 15% of websites need less resources to load. Javascripts take 154.6 kB which makes up the majority of the site volume.
Potential reduce by 15.0 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 15.0 kB or 74% of the original size.
Potential reduce by 3.5 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. ZKRD images are well optimized though.
Potential reduce by 102.1 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 102.1 kB or 66% of the original size.
Potential reduce by 29.4 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. Zkrd.de needs all CSS files to be minified and compressed as it can save up to 29.4 kB or 80% of the original size.
Number of requests can be reduced by 18 (58%)
31
13
The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZKRD. 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 from 10 to 1 for CSS and as a result speed up the page load time.
378 ms
flash.js
187 ms
jquery.min.js
735 ms
jquery.cycle2.min.js
461 ms
sifr.js
471 ms
sifr-debug.js
285 ms
global.css
190 ms
layer.css
283 ms
styles.css
373 ms
footer.css
292 ms
960.css
377 ms
sIFR-screen.css
387 ms
box_partner_login.css
463 ms
responsive_additions.css
464 ms
background.gif
98 ms
topnav_divider.gif
95 ms
flag_gb.gif
99 ms
logo.gif
95 ms
zkrd-logo.png
184 ms
patienten_und_angehoerige.jpg
281 ms
knochenmarkspender.jpg
458 ms
mediziner.jpg
187 ms
list-image.gif
191 ms
teaser_ueber-das-zkrd.jpg
281 ms
karte.gif
287 ms
nabelschnurblut.jpg
289 ms
inputback.gif
291 ms
teaser_video.jpg
377 ms
printer.gif
376 ms
arrow_top.gif
377 ms
sIFR-print.css
97 ms
print.css
96 ms
zkrd.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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
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
Image elements do not have [alt] attributes
Links do not have a discernible name
zkrd.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
zkrd.de SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
DE
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zkrd.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 Zkrd.de main page’s claimed encoding is iso-8859-1. 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.
zkrd.de
Open Graph description is not detected on the main page of ZKRD. 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: