3.5 sec in total
434 ms
2.3 sec
708 ms
Visit vls.cz now to see the best up-to-date Vls content for Czech Republic and also check out these interesting facts you probably never knew about vls.cz
VLS ČR, s.p. je státní společnost s více než 80. letou tradicí, s kořeny v první republice.
Visit vls.czWe analyzed Vls.cz page load time and found that the first response time was 434 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
vls.cz performance score
name
value
score
weighting
Value4.5 s
15/100
10%
Value8.2 s
2/100
25%
Value7.0 s
32/100
10%
Value1,600 ms
12/100
30%
Value0.104
89/100
15%
Value7.2 s
51/100
10%
434 ms
629 ms
207 ms
513 ms
101 ms
Our browser made a total of 24 requests to load all elements on the main page. We found that 92% of them (22 requests) were addressed to the original Vls.cz, 8% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (670 ms) belongs to the original domain Vls.cz.
Page size can be reduced by 62.3 kB (7%)
953.1 kB
890.8 kB
In fact, the total size of Vls.cz main page is 953.1 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. 30% of websites need less resources to load. Images take 839.7 kB which makes up the majority of the site volume.
Potential reduce by 39.3 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 21.3 kB, which is 48% 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 39.3 kB or 89% of the original size.
Potential reduce by 11.4 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. Vls 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 11.5 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. Vls.cz needs all CSS files to be minified and compressed as it can save up to 11.5 kB or 24% of the original size.
We found no issues to fix!
18
18
The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vls. According to our analytics all requests are already optimized.
vls.cz
434 ms
www.vls.cz
629 ms
desktop.css
207 ms
desktop.js
513 ms
logo.png
101 ms
sprites-desktop.png
200 ms
header23.jpg
403 ms
youtube-play.svg
301 ms
banner-otop-drivi.jpg
600 ms
logo-pefc-tm-25.png
410 ms
banner-deer-hunt_v2.jpg
609 ms
ecc64320f1747e09d1215d345c7cae30.jpg
511 ms
0d595f18da83b5550af153cc6767d7dd.jpg
514 ms
00e49e14bee5be68e8ddedcb70b28bd0.jpg
504 ms
behej-lesy.jpg
511 ms
vltava-run.jpg
604 ms
kolo-pro-zivot.jpg
610 ms
kudyznudy.png
611 ms
analytics.js
14 ms
roboto-regular-webfont.woff
574 ms
roboto-bold-webfont.woff
658 ms
MetaSerifPro-Book.woff
667 ms
opensans-regular-webfont.woff
670 ms
collect
12 ms
vls.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.
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
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.
vls.cz 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
General
Impact
Issue
Detected JavaScript libraries
vls.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
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 Vls.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 Vls.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.
vls.cz
Open Graph data is detected on the main page of Vls. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: