5.3 sec in total
1.3 sec
3.8 sec
209 ms
Visit czso.cz now to see the best up-to-date Czso content for Czech Republic and also check out these interesting facts you probably never knew about czso.cz
ČSÚ je ústředním orgánem státní správy ČR. Podle zákona o státní statistické službě získává a vytváří statistické informace o sociálním, ekonomickém, demografickém a ekologickém vývoji ČR a tyto údaje...
Visit czso.czWe analyzed Czso.cz page load time and found that the first response time was 1.3 sec and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
czso.cz performance score
name
value
score
weighting
Value4.0 s
22/100
10%
Value5.0 s
26/100
25%
Value7.8 s
24/100
10%
Value490 ms
59/100
30%
Value0.052
99/100
15%
Value11.6 s
18/100
10%
1335 ms
116 ms
340 ms
531 ms
445 ms
Our browser made a total of 70 requests to load all elements on the main page. We found that 97% of them (68 requests) were addressed to the original Czso.cz, 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Czso.cz.
Page size can be reduced by 1.3 MB (55%)
2.4 MB
1.1 MB
In fact, the total size of Czso.cz main page is 2.4 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. 25% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 61.3 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. 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 61.3 kB or 82% of the original size.
Potential reduce by 21.7 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. Czso images are well optimized though.
Potential reduce by 927.5 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 927.5 kB or 72% of the original size.
Potential reduce by 286.4 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. Czso.cz needs all CSS files to be minified and compressed as it can save up to 286.4 kB or 81% of the original size.
Number of requests can be reduced by 53 (77%)
69
16
The browser has sent 69 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Czso. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 22 to 1 for CSS and as a result speed up the page load time.
www.czso.cz
1335 ms
jquery-ui.min.css
116 ms
jquery.js
340 ms
jquery-ui.min.js
531 ms
jquery.cookie.js
445 ms
jquery.jui_dropdown.min.js
443 ms
FusionCharts.js
433 ms
FusionMaps.js
432 ms
monitoring.utils.js
450 ms
main.css
552 ms
application.css
551 ms
carousel.css
561 ms
recentnews.css
562 ms
main.css
568 ms
contextmenu.css
626 ms
barebone.jsp
913 ms
application.js
647 ms
aui-carousel.js
666 ms
main.css
666 ms
cookiebar.js
680 ms
csu-base.css
725 ms
csu-navmenu.css
749 ms
csu-forms.css
780 ms
csu-ie-fix.css
779 ms
csu-products.css
794 ms
csu-ui.css
824 ms
csu-temp.css
853 ms
csu-media.css
892 ms
csu-nahledovy-panel.css
894 ms
csu-tajny-panel.css
906 ms
csu-prilohy.css
978 ms
csu-cookie-bar.css
980 ms
main.js
1014 ms
analytics.js
54 ms
collect
14 ms
csu_2012_logo.png
118 ms
en_GB.png
108 ms
search.png
106 ms
aboutblank.gif
115 ms
csu_2012_bg-page.gif
100 ms
csu_2012_bg-search.png
142 ms
input_shadow.png
199 ms
csu_2012_bg-menu.gif
197 ms
csu_2012_menu-home1.gif
196 ms
samy_02_2016.jpg
705 ms
deti_cizinci02.jpg
298 ms
penize09.jpg
543 ms
brusic01.jpg
374 ms
domacnost_penize_01.jpg
381 ms
graf_monitor01.jpg
461 ms
transparent.gif
414 ms
a1aa67eb-5d9e-4670-a597-3d9a7741e6b2
547 ms
banner_vdb_2015_cz.jpg
572 ms
banner_volby_20151207.jpg
610 ms
banner_silc2016.jpg
637 ms
logo-iop-eu.gif
701 ms
633 ms
686 ms
csu_2012_indicator.gif
104 ms
csu_2012_map.png
201 ms
aktuality_separator.gif
121 ms
csu_2012_feed.gif
122 ms
csu_2012_arrow-blue.gif
130 ms
csu_2012_bg-page-bottom-big.png
206 ms
csu_2012_arrow-blue.gif
232 ms
csu_2012_bg-page-bottom.png
224 ms
pause.png
156 ms
prev.png
221 ms
next.png
209 ms
print.css
119 ms
czso.cz accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-hidden="true"] elements contain focusable descendents
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
czso.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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
czso.cz 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
Tap targets are not sized appropriately
CS
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Czso.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 Czso.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.
czso.cz
Open Graph description is not detected on the main page of Czso. 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: