5.9 sec in total
902 ms
4.7 sec
277 ms
Click here to check amazing Jcl content for Czech Republic. Otherwise, check out these important facts you probably never knew about jcl.cz
Specialista na firemní jazykovou výuku, odborné kurzy, překlady, tlumočení a pobyty v zahraničí. Kvalitní jazykové služby za férovou cenu.
Visit jcl.czWe analyzed Jcl.cz page load time and found that the first response time was 902 ms and then it took 5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
jcl.cz performance score
name
value
score
weighting
Value2.5 s
69/100
10%
Value7.3 s
5/100
25%
Value6.7 s
36/100
10%
Value610 ms
49/100
30%
Value0.013
100/100
15%
Value6.2 s
63/100
10%
902 ms
60 ms
241 ms
716 ms
240 ms
Our browser made a total of 69 requests to load all elements on the main page. We found that 88% of them (61 requests) were addressed to the original Jcl.cz, 7% (5 requests) were made to Fast.fonts.net and 3% (2 requests) were made to C.imedia.cz. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Jcl.cz.
Page size can be reduced by 536.5 kB (33%)
1.6 MB
1.1 MB
In fact, the total size of Jcl.cz main page is 1.6 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. 40% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 13.1 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 13.1 kB or 77% of the original size.
Potential reduce by 224.9 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. Obviously, Jcl needs image optimization as it can save up to 224.9 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 163.5 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 163.5 kB or 73% of the original size.
Potential reduce by 135.1 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. Jcl.cz needs all CSS files to be minified and compressed as it can save up to 135.1 kB or 88% of the original size.
Number of requests can be reduced by 20 (31%)
64
44
The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jcl. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
jcl.cz
902 ms
fb8f4ad9-1e11-4e7a-b888-d0a82fd3c350.css
60 ms
style.css
241 ms
style-1a1238a591.css
716 ms
styles.css
240 ms
qts-default.css
240 ms
jquery.js
591 ms
jquery-migrate.min.js
302 ms
jquery.colorbox.js
575 ms
jquery.easing.1.3.js
473 ms
script.js
590 ms
smooth.js
535 ms
slider.script.js
756 ms
slidsub.script.js
772 ms
slidersub.script.js
813 ms
slidersub2.script.js
827 ms
timeline.js
872 ms
tabs.script.js
958 ms
maps-switching.js
957 ms
retargeting.js
366 ms
jquery.form.min.js
1011 ms
scripts.js
1100 ms
retargeting
125 ms
L.js
346 ms
bg.jpg
1811 ms
cportlogincz.png
257 ms
logo.png
236 ms
slogancz.png
309 ms
jazyk.png
273 ms
headline.png
447 ms
control.png
471 ms
meritko.png
494 ms
move.png
509 ms
abb.jpg
699 ms
accenture.gif
911 ms
atlascopco.jpg
948 ms
billa.gif
735 ms
cetelem.jpg
967 ms
cleverlance.png
1060 ms
colas.png
970 ms
comap.gif
1144 ms
cdcargo.jpg
1415 ms
cdtelematika.gif
1322 ms
ceps.jpg
1325 ms
cesky_aeroholding.png
1294 ms
ceska_exportni_banka.jpg
1499 ms
ceskasporitelna.jpg
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csob_leasing.gif
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dhl.jpg
1752 ms
exxon.jpg
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ftvprima.png
1740 ms
globus.jpg
2015 ms
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jtbanka.png
1975 ms
kaufland.jpg
1991 ms
makro.jpg
2158 ms
pre.jpg
2255 ms
raiffeisenbank.jpg
2480 ms
5b4a262e-3342-44e2-8ad7-719998a68134.woff
59 ms
d5af76d8-a90b-4527-b3a3-182207cc3250.woff
114 ms
4a9c62ab-b359-4081-8383-a0d1cdebd111.woff
113 ms
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rwe.jpg
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vitana.jpg
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jcl.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.
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.
jcl.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
Browser errors were logged to the console
Page has valid source maps
jcl.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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 Jcl.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 Jcl.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.
jcl.cz
Open Graph description is not detected on the main page of Jcl. 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: