10.2 sec in total
325 ms
9.5 sec
289 ms
Welcome to klas.cz homepage info - get ready to check KLAS best content for Czech Republic right away, or after learning these important things about klas.cz
KLAS - měníme vztah lidí k vlastnímu zdraví
Visit klas.czWe analyzed Klas.cz page load time and found that the first response time was 325 ms and then it took 9.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
klas.cz performance score
name
value
score
weighting
Value14.4 s
0/100
10%
Value28.8 s
0/100
25%
Value36.9 s
0/100
10%
Value410 ms
67/100
30%
Value0.142
79/100
15%
Value23.3 s
1/100
10%
325 ms
885 ms
1579 ms
128 ms
241 ms
Our browser made a total of 100 requests to load all elements on the main page. We found that 92% of them (92 requests) were addressed to the original Klas.cz, 5% (5 requests) were made to Google-analytics.com and 3% (3 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (4.9 sec) belongs to the original domain Klas.cz.
Page size can be reduced by 579.8 kB (53%)
1.1 MB
507.9 kB
In fact, the total size of Klas.cz main page is 1.1 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. 35% of websites need less resources to load. Javascripts take 616.0 kB which makes up the majority of the site volume.
Potential reduce by 48.0 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 6.5 kB, which is 11% 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 48.0 kB or 82% of the original size.
Potential reduce by 33.7 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. Obviously, KLAS needs image optimization as it can save up to 33.7 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 417.4 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 417.4 kB or 68% of the original size.
Potential reduce by 80.7 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. Klas.cz needs all CSS files to be minified and compressed as it can save up to 80.7 kB or 84% of the original size.
Number of requests can be reduced by 59 (61%)
97
38
The browser has sent 97 CSS, Javascripts, AJAX and image requests in order to completely render the main page of KLAS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.
klas.cz
325 ms
www.klas.cz
885 ms
index.php
1579 ms
icons.css
128 ms
screen.css
241 ms
style.css
527 ms
jquery.jqplot.css
314 ms
jquery-ui-1.8.9.custom.css
424 ms
imageflow.packed.css
329 ms
imageflow.js
567 ms
jquery.js
496 ms
jquery.nette.js
426 ms
jquery.ajaxform.js
436 ms
ajaxdialog.js
555 ms
tiny_mce.js
1172 ms
jquery-ui-1.8.9.custom.min.js
1527 ms
swfobject.js
626 ms
jquery-ui-timepicker-addon.js
626 ms
jquery.lightbox-0.5.pack.js
739 ms
jquery.tools.min.js
717 ms
jquery.ui.datepicker-de.js
745 ms
jquery.ui.datepicker-en-GB.js
737 ms
jquery.ui.datepicker-sk.js
833 ms
jquery.ui.datepicker-cs.js
845 ms
contentSlider.js
861 ms
jquery.lightbox-0.5.css
862 ms
ajax.js
942 ms
tiny_mce_init.js
943 ms
contentslider.css
456 ms
analytics.js
69 ms
ga.js
69 ms
background.jpg
149 ms
header-rightpic.jpg
145 ms
logo.jpg
145 ms
cs.gif
147 ms
sk.gif
149 ms
zdravi-pic-2column.jpg
264 ms
penize-pic-2column.jpg
351 ms
606 ms
1014 ms
787 ms
1309 ms
1419 ms
1631 ms
1819 ms
2033 ms
2230 ms
key.png
1412 ms
2436 ms
2651 ms
2864 ms
3066 ms
3269 ms
3459 ms
3614 ms
3763 ms
4598 ms
4018 ms
4166 ms
4281 ms
4444 ms
4678 ms
4875 ms
footer-logo.jpg
4268 ms
ui-icons_84a814_256x240.png
4365 ms
left-content-bcg.jpg
4372 ms
left-content-top.jpg
4469 ms
collect
16 ms
inpage_linkid.js
11 ms
collect
39 ms
collect
38 ms
__utm.gif
16 ms
__utm.gif
11 ms
menu-grey-top.jpg
4351 ms
menu-grey-bottom.jpg
4426 ms
menu-grey-middle.jpg
4446 ms
menu-button.jpg
4449 ms
menu-button-grey.jpg
4529 ms
menu-arrow-small-white.gif
4432 ms
menu-green-top.jpg
4348 ms
menu-green-bottom.jpg
4099 ms
menu-green-middle.jpg
3992 ms
menu-arrow-small-grey.gif
3776 ms
menu-arrow-big-grey.gif
3487 ms
menu-purple-top.jpg
3385 ms
menu-purple-bottom.jpg
3388 ms
menu-purple-middle.jpg
3251 ms
headline-grey.jpg
3090 ms
kontejner-1column-bottom.gif
2867 ms
kontejner-1column-middle.gif
2671 ms
kontejner-shade_inside.jpg
2474 ms
kontejner-2column-top-green.jpg
2334 ms
kontejner-2column-bottom.gif
2119 ms
kontejner-2column-middle.gif
1937 ms
kontejner-2column-top-purple.jpg
1735 ms
znak-grey_on_grey.jpg
1554 ms
kontejner-2column-top.gif
1399 ms
footer-bcg.jpg
1323 ms
footer-top-green.jpg
1067 ms
print.css
105 ms
klas.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.
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
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
klas.cz 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
klas.cz SEO score
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
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Klas.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it matches the claimed language. Our system also found out that Klas.cz 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.
klas.cz
Open Graph description is not detected on the main page of KLAS. 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: