4.2 sec in total
358 ms
3.3 sec
476 ms
Welcome to bi.cz homepage info - get ready to check Bi best content right away, or after learning these important things about bi.cz
BOHEMIA INSTITUT od roku 1991 nabízí širokou škálu otevřeného mezi-profesního post-sekundárního a celoživotního vzdělání, které vychází z aktuální potřeby a trendů českého i mezinárodního vzdělávacího...
Visit bi.czWe analyzed Bi.cz page load time and found that the first response time was 358 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
bi.cz performance score
name
value
score
weighting
Value3.5 s
34/100
10%
Value4.3 s
43/100
25%
Value6.3 s
41/100
10%
Value370 ms
71/100
30%
Value0.097
91/100
15%
Value8.1 s
42/100
10%
358 ms
1345 ms
338 ms
346 ms
235 ms
Our browser made a total of 82 requests to load all elements on the main page. We found that 54% of them (44 requests) were addressed to the original Bi.cz, 12% (10 requests) were made to Static.xx.fbcdn.net and 10% (8 requests) were made to App.livechatoo.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Bi.cz.
Page size can be reduced by 104.3 kB (22%)
482.1 kB
377.8 kB
In fact, the total size of Bi.cz main page is 482.1 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. 40% of websites need less resources to load. Images take 374.8 kB which makes up the majority of the site volume.
Potential reduce by 36.2 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 36.2 kB or 73% of the original size.
Potential reduce by 53.8 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, Bi needs image optimization as it can save up to 53.8 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 7.1 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 7.1 kB or 15% of the original size.
Potential reduce by 7.2 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. Bi.cz needs all CSS files to be minified and compressed as it can save up to 7.2 kB or 76% of the original size.
Number of requests can be reduced by 36 (46%)
79
43
The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bi. 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.
bi.cz
358 ms
www.bi.cz
1345 ms
bohemia-institut.css
338 ms
swfobject.js
346 ms
script.js
235 ms
webtoolkit.url.js
235 ms
code
244 ms
retargeting.js
335 ms
conversion.js
16 ms
icon-garantovano.png
537 ms
idnes.gif
334 ms
bgvertical.gif
121 ms
logo.gif
121 ms
mnu-home.gif
121 ms
mnu-mapa.gif
119 ms
mnu-spr.gif
121 ms
menu3-no.gif
226 ms
foreign.gif
233 ms
seky.gif
345 ms
facebook.gif
235 ms
klub75x75.gif
350 ms
parneri.gif
354 ms
esf2.gif
453 ms
virtualni-prochazka--banner.gif
347 ms
Bm-Vanocni-darek.jpg
350 ms
pomaturitni-kurzy.gif
461 ms
akreditace.gif
462 ms
ikona-ies.jpg
466 ms
anketa.gif
469 ms
bis.gif
469 ms
hlava1.gif
675 ms
hlava2.gif
690 ms
hlava3.gif
692 ms
logo_HK_CZ_bar.gif
1281 ms
LOGO%20AJS_obdelnik.png
933 ms
Logo_AIVD_CR.gif
716 ms
AJSA_ctverec_web%20maly.gif
908 ms
certifikat-ies.gif
805 ms
British%20Council_%20partner%20color.jpg
1386 ms
msmt.gif
832 ms
bi-foto.jpg
1034 ms
bi-male.jpg
1056 ms
all.js
73 ms
bg2.gif
1008 ms
bgmenu.gif
1046 ms
brad-arrow.gif
1119 ms
left-header.gif
1146 ms
left-header-white.gif
1163 ms
web.min.js
340 ms
143 ms
rss-sipka.png
1068 ms
xd_arbiter.php
80 ms
xd_arbiter.php
134 ms
hit
235 ms
cs
123 ms
dot.asp
211 ms
retargeting
115 ms
ga.js
7 ms
37 ms
__utm.gif
18 ms
34 ms
global.css
105 ms
client-embed.min.js
212 ms
client-embed-cs.min.js
209 ms
like_box.php
106 ms
ebiMDO3r-8l.css
123 ms
jGc-59L_9lo.css
141 ms
q68gy-v_YMF.js
177 ms
hHAUS9q05ns.js
207 ms
0wM5s1Khldu.js
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1bNoFZUdlYZ.js
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bg_client_logo.png
123 ms
ilu_arw.png
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ico_status.png
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__utm.gif
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380227_430634120298643_1436287250_n.jpg
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45774_147217538640304_5323662_n.jpg
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wL6VQj7Ab77.png
22 ms
s7jcwEQH7Sx.png
20 ms
I6-MnjEovm5.js
20 ms
pQrUxxo5oQp.js
23 ms
bohemia-institut-print.css
118 ms
bi.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.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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
bi.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
bi.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
CS
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Bi.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 Bi.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.
bi.cz
Open Graph description is not detected on the main page of Bi. 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: