7.5 sec in total
261 ms
7 sec
224 ms
Click here to check amazing Center content for Czech Republic. Otherwise, check out these important facts you probably never knew about center.cz
BusinessCenter.cz - Informační server pro podnikání
Visit center.czWe analyzed Center.cz page load time and found that the first response time was 261 ms and then it took 7.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
center.cz performance score
name
value
score
weighting
Value5.6 s
5/100
10%
Value11.0 s
0/100
25%
Value12.4 s
3/100
10%
Value5,060 ms
0/100
30%
Value0.004
100/100
15%
Value25.8 s
0/100
10%
261 ms
382 ms
231 ms
30 ms
226 ms
Our browser made a total of 123 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Center.cz, 25% (31 requests) were made to Business.center.cz and 20% (24 requests) were made to Pixel.rubiconproject.com. The less responsive or slowest element that took the longest time to load (3.3 sec) relates to the external source Ls.hit.gemius.pl.
Page size can be reduced by 196.7 kB (27%)
727.1 kB
530.4 kB
In fact, the total size of Center.cz main page is 727.1 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. 50% of websites need less resources to load. Javascripts take 396.4 kB which makes up the majority of the site volume.
Potential reduce by 47.7 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 47.7 kB or 76% of the original size.
Potential reduce by 3.2 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. Center images are well optimized though.
Potential reduce by 133.6 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 133.6 kB or 34% of the original size.
Potential reduce by 12.2 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. Center.cz needs all CSS files to be minified and compressed as it can save up to 12.2 kB or 82% of the original size.
Number of requests can be reduced by 82 (75%)
110
28
The browser has sent 110 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Center. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
center.cz
261 ms
business.center.cz
382 ms
main
231 ms
jquery.min.js
30 ms
homepage
226 ms
rejstriky.js
245 ms
bb_one2n.js
223 ms
ga.js
32 ms
analytics.js
48 ms
tpagebgdark.gif
121 ms
ttopbg.png
118 ms
ttopleftbg.png
123 ms
toplogo2.gif
123 ms
priznani02.jpg
358 ms
spacer.gif
239 ms
btn_nahoru.gif
246 ms
btnsearchterm.gif
248 ms
btn_prihlasit.gif
248 ms
btnsendmail.gif
244 ms
btnanketares.gif
350 ms
btnsearch.gif
361 ms
tmainmenubgright.gif
351 ms
menubg1_1.gif
371 ms
menubgmezi_10.gif
352 ms
menubg2_0.gif
450 ms
menubgmezi_00.gif
461 ms
menubgend_0.gif
465 ms
tfooter1lc.gif
469 ms
menu2hpbg.gif
471 ms
tgreyendbg.gif
487 ms
hpupoutavkabg.gif
582 ms
tbluenadpisleft.gif
578 ms
tbluenadpisright.gif
584 ms
tmrch2bg.gif
586 ms
tfooter1rc.gif
586 ms
__utm.gif
12 ms
bb_one2n.113.65.77.1.js
428 ms
bbnaut-lib-1.7.5.min.js
337 ms
print.css
117 ms
284 ms
10900.js
38 ms
sync
17 ms
350740-2.js
164 ms
sync
9 ms
351786-2.js
166 ms
263 ms
LB_zabradli.html
568 ms
emily.html
13 ms
emily.html
25 ms
emily.html
28 ms
emily.html
12 ms
sync
10 ms
350740-14.js
166 ms
sync
9 ms
351786-14.js
166 ms
runtime.js
78 ms
tap.php
223 ms
279 ms
index.html
233 ms
241 ms
pixel.htm
33 ms
channels.js
17 ms
xgemius.js
448 ms
cse.js
16 ms
co
239 ms
tap.php
395 ms
cse.js
54 ms
ddc.htm
19 ms
tap.php
235 ms
jsapi
91 ms
rubicon.ashx
95 ms
rubicon
31 ms
cookiematch
45 ms
240 ms
sync
58 ms
rbcm
359 ms
cmr
42 ms
71 ms
cm
37 ms
rc
45 ms
rubicon
23 ms
tap.php
355 ms
pixel
35 ms
tap.php
351 ms
tap.php
370 ms
pixel
35 ms
tap.php
401 ms
tap.php
494 ms
tap.php
355 ms
tap.php
517 ms
tap.php
431 ms
tap.php
613 ms
default+cs.css
26 ms
default+cs.I.js
49 ms
tap.php
637 ms
tap.php
647 ms
tap.php
694 ms
tap.php
737 ms
tap.php
803 ms
tap.php
914 ms
default.css
38 ms
back.jpg
429 ms
money.jpg
427 ms
red.png
324 ms
black.png
323 ms
green.png
323 ms
logo.png
217 ms
tap.php
944 ms
272 ms
pixel
29 ms
tap.php
961 ms
async-ads.js
59 ms
google_custom_search_watermark.gif
21 ms
small-logo.png
16 ms
search_box_icon.png
15 ms
clear.png
16 ms
tap.php
994 ms
tap.php
933 ms
tap.php
993 ms
fpdata.js
108 ms
tap.php
903 ms
lsget.html
3259 ms
et2
228 ms
center.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
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
No form fields have multiple labels
Image elements do not have [alt] attributes
Links do not have a discernible name
center.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
center.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
Tap targets are not sized appropriately
CS
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Center.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech 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 Center.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.
center.cz
Open Graph description is not detected on the main page of Center. 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: