6.4 sec in total
791 ms
5.1 sec
493 ms
Welcome to stavba.tzb-info.cz homepage info - get ready to check Stavba TZB Info best content for Czech Republic right away, or after learning these important things about stavba.tzb-info.cz
Odborné informace o stavebnictví - výpočty, videa, odborná poradna. Izolace, střechy, fasády, okna, dveře, nízkoenergetické stavby, dřevostavby.
Visit stavba.tzb-info.czWe analyzed Stavba.tzb-info.cz page load time and found that the first response time was 791 ms and then it took 5.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
stavba.tzb-info.cz performance score
name
value
score
weighting
Value5.3 s
7/100
10%
Value12.2 s
0/100
25%
Value13.0 s
3/100
10%
Value620 ms
48/100
30%
Value0.075
95/100
15%
Value15.7 s
7/100
10%
791 ms
212 ms
204 ms
226 ms
224 ms
Our browser made a total of 178 requests to load all elements on the main page. We found that 60% of them (107 requests) were addressed to the original Stavba.tzb-info.cz, 6% (10 requests) were made to Static.xx.fbcdn.net and 5% (9 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (868 ms) belongs to the original domain Stavba.tzb-info.cz.
Page size can be reduced by 1.1 MB (52%)
2.1 MB
986.4 kB
In fact, the total size of Stavba.tzb-info.cz main page is 2.1 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. 60% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.
Potential reduce by 70.8 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 70.8 kB or 73% of the original size.
Potential reduce by 24.0 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. Stavba TZB Info images are well optimized though.
Potential reduce by 890.5 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 890.5 kB or 71% of the original size.
Potential reduce by 90.8 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. Stavba.tzb-info.cz needs all CSS files to be minified and compressed as it can save up to 90.8 kB or 82% of the original size.
Number of requests can be reduced by 94 (56%)
169
75
The browser has sent 169 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stavba 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 42 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.
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stavba.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
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
stavba.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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Registers an unload listener
Detected JavaScript libraries
Uses deprecated APIs
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
stavba.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
CS
CS
ISO-8859-2
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Stavba.tzb-info.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 Stavba.tzb-info.cz main page’s claimed encoding is iso-8859-2. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
stavba.tzb-info.cz
Open Graph description is not detected on the main page of Stavba 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: