3.7 sec in total
364 ms
3.2 sec
156 ms
Welcome to astrasw.cz homepage info - get ready to check Astra Sw best content for Czech Republic right away, or after learning these important things about astrasw.cz
Výpočet umělého osvětlení. Výpočet nouzového osvětlení. Výpočet osvětlení vozovky. Výpočet osvětlení přechodu. EN 17037 - Denní osvětlení a proslunění. Software pro projektování elektrotechniky. Astra...
Visit astrasw.czWe analyzed Astrasw.cz page load time and found that the first response time was 364 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
astrasw.cz performance score
name
value
score
weighting
Value3.5 s
34/100
10%
Value6.5 s
9/100
25%
Value6.1 s
44/100
10%
Value1,320 ms
17/100
30%
Value0.008
100/100
15%
Value9.4 s
31/100
10%
364 ms
102 ms
204 ms
204 ms
208 ms
Our browser made a total of 29 requests to load all elements on the main page. We found that 90% of them (26 requests) were addressed to the original Astrasw.cz, 7% (2 requests) were made to Google-analytics.com and 3% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Astrasw.cz.
Page size can be reduced by 237.6 kB (28%)
848.3 kB
610.7 kB
In fact, the total size of Astrasw.cz main page is 848.3 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. 25% of websites need less resources to load. Images take 693.5 kB which makes up the majority of the site volume.
Potential reduce by 15.1 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 15.1 kB or 68% of the original size.
Potential reduce by 133.4 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, Astra Sw needs image optimization as it can save up to 133.4 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 55.0 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 55.0 kB or 63% of the original size.
Potential reduce by 34.1 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. Astrasw.cz needs all CSS files to be minified and compressed as it can save up to 34.1 kB or 74% of the original size.
Number of requests can be reduced by 16 (57%)
28
12
The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Astra Sw. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
astrasw.cz
364 ms
css_xE-rWrJf-fncB6ztZfd2huxqgxu4WO-qwma6Xer30m4.css
102 ms
css_hYCLW089C9S9sP3ZYkuG6R-Q5ZHbEhblZBFjwZ_bE_I.css
204 ms
css_8tsYXS0QxAlN0SqfZ2qnQqxdq6DYR77TzyE3JlQKEQY.css
204 ms
css_J7S1If6vJ_SaAs0igvzhlnAkCw1XQJubq_QK85xxous.css
208 ms
jquery.min.js
32 ms
js_A8cWkYFzCW8M-gdYSNX0-Cn5J_5opdfWXGDN9nyGpS8.js
207 ms
js_MQ0ZweHheWNUfrGkLmHxpXDsnxtCmPzVbzaeiK9TnJc.js
227 ms
lightbox.js
228 ms
js_FaVaP27elEqEfDXL_W610vU8p7ARD-b23navDOhitqg.js
301 ms
js_7HrW_W_4fir5zsPrYLQVqEdtQC9D3nJB8trLDfnzNHY.js
303 ms
js_sqoZqUXD0FyrdPdNA3QYrM6UucCpv6Ftlbg_EBd_aLY.js
305 ms
ga.js
54 ms
cs.png
102 ms
en.png
103 ms
logo.png
105 ms
nav-border.png
103 ms
wils-screen-29.PNG
505 ms
vzduchotechnika-vykres.png
718 ms
vzduchotechnika.jpg
405 ms
osvetleni.jpg
407 ms
ElProCAD-ELA-list.png
409 ms
ElProCAD-ELA1.png
619 ms
wils-video.jpg
2218 ms
VzProCAD-3DModel.jpg
2443 ms
marker.png
513 ms
download-arrow.png
605 ms
arrows.png
615 ms
__utm.gif
11 ms
astrasw.cz accessibility score
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
Buttons do not have an accessible name
Image elements do not have [alt] attributes
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
astrasw.cz best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
astrasw.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
CS
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Astrasw.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 Astrasw.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.
astrasw.cz
Open Graph description is not detected on the main page of Astra Sw. 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: