4.9 sec in total
324 ms
4.1 sec
530 ms
Click here to check amazing TZB Info content for Czech Republic. Otherwise, check out these important facts you probably never knew about tzb-info.cz
Odborný web pro stavebnictví, technická zařízení budov a úspory energií. To nejlepí o stavbě a vytápění, větrání, klimatizaci, vodě a kanalizaci, obnovitelné energii a facility managementu. Oborová d...
Visit tzb-info.czWe analyzed Tzb-info.cz page load time and found that the first response time was 324 ms and then it took 4.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
tzb-info.cz performance score
name
value
score
weighting
Value7.1 s
1/100
10%
Value7.1 s
5/100
25%
Value31.8 s
0/100
10%
Value690 ms
43/100
30%
Value0.176
68/100
15%
Value14.8 s
8/100
10%
324 ms
554 ms
211 ms
206 ms
217 ms
Our browser made a total of 153 requests to load all elements on the main page. We found that 65% of them (100 requests) were addressed to the original Tzb-info.cz, 7% (10 requests) were made to Static.xx.fbcdn.net and 6% (9 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (899 ms) belongs to the original domain Tzb-info.cz.
Page size can be reduced by 761.3 kB (31%)
2.5 MB
1.7 MB
In fact, the total size of Tzb-info.cz main page is 2.5 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. 55% of websites need less resources to load. Images take 1.6 MB which makes up the majority of the site volume.
Potential reduce by 73.5 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 73.5 kB or 74% of the original size.
Potential reduce by 78.0 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. TZB Info images are well optimized though.
Potential reduce by 517.2 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 517.2 kB or 75% of the original size.
Potential reduce by 92.6 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. Tzb-info.cz needs all CSS files to be minified and compressed as it can save up to 92.6 kB or 82% of the original size.
Number of requests can be reduced by 74 (51%)
144
70
The browser has sent 144 CSS, Javascripts, AJAX and image requests in order to completely render the main page of TZB Info. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.
tzb-info.cz
324 ms
www.tzb-info.cz
554 ms
t.css
211 ms
t2.css
206 ms
main.css
217 ms
withe3.css
218 ms
t.js
215 ms
tabcontent.js
217 ms
dropdown.js
303 ms
popup.js
312 ms
swfobject.js
311 ms
jquery-1.8.2.js
840 ms
jquery.scrollTo-1.4.2-min.js
317 ms
jquery.serialScroll-1.2.2-min.js
322 ms
jquery-ui-1.9.1.custom.min.js
899 ms
jquery-ui-1.9.1.custom.css
412 ms
jquery.copyInject.min.js
412 ms
jquery.utils.selection.min.js
420 ms
withtb.css
424 ms
rollbando3.css
516 ms
titulka.css
519 ms
around84.css
527 ms
201602w1.js
556 ms
bb_one2n.js
230 ms
css
23 ms
logo.png
399 ms
bg_body2.gif
403 ms
bkg_header.jpg
413 ms
bb_one2n.113.65.77.1.js
408 ms
analytics.js
54 ms
bkg_body84.jpg
750 ms
xgemius.js
322 ms
dot.asp
230 ms
dot.asp
307 ms
bg_topmenu-divider.png
126 ms
bkg_main11.gif
122 ms
013856ou.jpg
120 ms
013854ou.jpg
123 ms
032186s.gif
122 ms
013850ou.jpg
219 ms
033575s.gif
224 ms
reklama.gif
215 ms
h3-box.gif
219 ms
h3-box-span.gif
223 ms
bg_tabs.gif
317 ms
paleet---einar-aslaksen-1_tn2.jpg
322 ms
fotolia_85511876_subscription_monthly_m_tn2.jpg
324 ms
fotolia_103085222_subscription_monthly_m_tn2.jpg
328 ms
h3-box-orange.gif
282 ms
h3-box-span-orange.gif
283 ms
013851ou.jpg
291 ms
013855ou.jpg
291 ms
033468s.gif
375 ms
013853ou.jpg
387 ms
013857ou.jpg
390 ms
013848ou.jpg
504 ms
013849ou.jpg
401 ms
031594s.gif
477 ms
013847ou.jpg
493 ms
013846ou.jpg
494 ms
013846oa.jpg
508 ms
013844ou.jpg
579 ms
031552s.gif
603 ms
013845ou.jpg
600 ms
013845oa.jpg
612 ms
013841ou.jpg
617 ms
032701s.gif
680 ms
013843ou.png
708 ms
013842ou.jpg
711 ms
031768s.gif
720 ms
013840ou.jpg
729 ms
013837ou.jpg
784 ms
Zd2E9abXLFGSr9G3YK2MsK8NE7_Gi-Xz52ZQ_AwfA78.woff
37 ms
b9QBgL0iMZfDSpmcXcE8nCj3Mi2hOMP9GNHlaDA9WRI.woff
45 ms
b9QBgL0iMZfDSpmcXcE8nJT5GEmoOtNsejy4tIPLwv0.woff
74 ms
collect
14 ms
collect
77 ms
010085s.gif
728 ms
013838ou.jpg
742 ms
010401s.gif
741 ms
bg_sekce.gif
755 ms
bullet.gif
761 ms
bbnaut-lib-1.7.5.min.js
457 ms
connect.php
201 ms
ga-audiences
54 ms
013456o4.jpg
718 ms
h3-v2-box.gif
789 ms
h3-v2-box-span.gif
787 ms
heluz3.gif
784 ms
brilon3.gif
786 ms
fpdata.js
101 ms
lsget.html
377 ms
button-prihlasit.gif
692 ms
webarchiv_certifikat_cb.gif
709 ms
bkg_header-x84.jpg
739 ms
FbUd6dZS1Af.css
286 ms
dGJLq38YL-C.css
355 ms
_rx8naC75Dy.js
489 ms
ZRUHGSRAt8d.js
622 ms
ICDbTSzjQEg.js
500 ms
TTCre3391I0.js
500 ms
bkg_menu2_full.png
742 ms
bkg_menu1_r-border.png
740 ms
bkg_menu1_l-border.png
677 ms
bkg_menu1_center.png
674 ms
menu-bg.png
702 ms
btn_search.gif
728 ms
013826ou.jpg
660 ms
013781ou.jpg
647 ms
013780ou.jpg
665 ms
013764ou.jpg
668 ms
ico-news.png
686 ms
402 ms
heluz4.gif
658 ms
geminox2.gif
643 ms
stp2.gif
644 ms
en.gif
656 ms
reklama_d.gif
659 ms
bg_newsslider.png
616 ms
li-divider.png
650 ms
rexdot.js
102 ms
575244_10151103538781472_721680969_n.png
421 ms
31848_405212661471_6361864_n.jpg
568 ms
10996510_1415406532115123_1892570505823267025_n.jpg
602 ms
11951171_1685008818380020_7502982357816139708_n.jpg
669 ms
10421498_1374517409508509_4537893686450637084_n.jpg
672 ms
12705790_10207327824985866_1969853170431178757_n.jpg
673 ms
12249871_1205398232807777_7346836916136512086_n.jpg
674 ms
165163_179798992054652_8241476_n.jpg
671 ms
3895_10208786652806511_8753986028532953588_n.jpg
669 ms
wL6VQj7Ab77.png
81 ms
s7jcwEQH7Sx.png
80 ms
b627706_2.gif
205 ms
project.css
384 ms
css
15 ms
print.css
151 ms
fvplast_logo.png
133 ms
k3k702ZOKiLJc3WVjuplzBa1RVmPjeKy21_GQJaLlJI.woff
106 ms
u-WUoqrET9fUeobQW7jkRT8E0i7KZn-EPnyo3HZu7kw.woff
108 ms
b671031_1.gif
459 ms
117x47p.png
247 ms
b661932_1.jpg
777 ms
b670120_3.jpg
879 ms
b677002_1.gif
561 ms
b456683_1.jpg
558 ms
co
230 ms
banner_open-close_o.gif
115 ms
ui-bg_highlight-soft_100_eeeeee_1x100.png
114 ms
arrow-left.png
115 ms
arrow-right.png
113 ms
Orsec1000x300_naTZB.gif
674 ms
I6-MnjEovm5.js
69 ms
vlXaquuXMrr.js
72 ms
tzb-info.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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
tzb-info.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
tzb-info.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 doesn't use legible font sizes
N/A
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tzb-info.cz can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Czech. Our system also found out that Tzb-info.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.
tzb-info.cz
Open Graph description is not detected on the main page of TZB Info. 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: