2.3 sec in total
702 ms
1.4 sec
120 ms
Click here to check amazing Zzz content for Czech Republic. Otherwise, check out these important facts you probably never knew about zzz.cz
Visit zzz.czWe analyzed Zzz.cz page load time and found that the first response time was 702 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.
zzz.cz performance score
name
value
score
weighting
Value1.0 s
100/100
10%
Value1.3 s
100/100
25%
Value2.1 s
99/100
10%
Value0 ms
100/100
30%
Value0
100/100
15%
Value1.0 s
100/100
10%
702 ms
432 ms
525 ms
320 ms
216 ms
Our browser made a total of 20 requests to load all elements on the main page. We found that 95% of them (19 requests) were addressed to the original Zzz.cz, 5% (1 request) were made to Toplist.cz. The less responsive or slowest element that took the longest time to load (972 ms) belongs to the original domain Zzz.cz.
Page size can be reduced by 219.2 kB (50%)
436.7 kB
217.5 kB
In fact, the total size of Zzz.cz main page is 436.7 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. Images take 391.7 kB which makes up the majority of the site volume.
Potential reduce by 33.0 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. This page needs HTML code to be minified as it can gain 26.0 kB, which is 73% 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 33.0 kB or 93% of the original size.
Potential reduce by 177.8 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. Obviously, Zzz needs image optimization as it can save up to 177.8 kB or 45% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 8.5 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. Zzz.cz needs all CSS files to be minified and compressed as it can save up to 8.5 kB or 87% of the original size.
We found no issues to fix!
19
19
The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zzz. According to our analytics all requests are already optimized.
zzz.cz
702 ms
style.css
432 ms
logo-8.jpg
525 ms
hlavni.gif
320 ms
zb.gif
216 ms
kaldera.jpg
739 ms
zidle.jpg
751 ms
dirka.jpg
781 ms
docs.jpg
757 ms
vylety.jpg
651 ms
fotop.jpg
642 ms
cab.jpg
854 ms
kruh.jpg
851 ms
nove.gif
760 ms
1505-2959-t.jpg
972 ms
czm.jpg
578 ms
gbm.jpg
653 ms
dot.asp
212 ms
raven-2s.jpg
643 ms
adr.gif
564 ms
zzz.cz 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.
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 [lang] attribute
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
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.
zzz.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Browser errors were logged to the console
zzz.cz 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
EN
N/A
WINDOWS-1250
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zzz.cz can be misinterpreted by Google and other search engines. Our service has detected that English 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 Zzz.cz main page’s claimed encoding is windows-1250. 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.
zzz.cz
Open Graph description is not detected on the main page of Zzz. 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: