5 sec in total
972 ms
3.6 sec
430 ms
Welcome to hvezdarna.cz homepage info - get ready to check Hvezdarna best content for Russia right away, or after learning these important things about hvezdarna.cz
Hvězdárna a planetárium Brno
Visit hvezdarna.czWe analyzed Hvezdarna.cz page load time and found that the first response time was 972 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
hvezdarna.cz performance score
name
value
score
weighting
Value2.8 s
58/100
10%
Value6.1 s
12/100
25%
Value4.5 s
73/100
10%
Value40 ms
100/100
30%
Value0.104
89/100
15%
Value3.7 s
90/100
10%
972 ms
11 ms
233 ms
237 ms
238 ms
Our browser made a total of 74 requests to load all elements on the main page. We found that 91% of them (67 requests) were addressed to the original Hvezdarna.cz, 3% (2 requests) were made to Cdnjs.cloudflare.com and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Hvezdarna.cz.
Page size can be reduced by 161.0 kB (13%)
1.3 MB
1.1 MB
In fact, the total size of Hvezdarna.cz main page is 1.3 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. 30% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 62.5 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 62.5 kB or 84% of the original size.
Potential reduce by 68.6 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. Hvezdarna images are well optimized though.
Potential reduce by 15.7 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 15.7 kB or 41% of the original size.
Potential reduce by 14.1 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. Hvezdarna.cz needs all CSS files to be minified and compressed as it can save up to 14.1 kB or 73% of the original size.
Number of requests can be reduced by 24 (33%)
73
49
The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Hvezdarna. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
www.hvezdarna.cz
972 ms
classic-081711.css
11 ms
main.css
233 ms
header.css
237 ms
title-content.css
238 ms
program-title.css
239 ms
footer.css
241 ms
customEffects.js
346 ms
ajaxLoad.js
351 ms
autoRoll.js
349 ms
init.php
352 ms
cookieconsent.min.js
7 ms
ga.js
38 ms
fbevents.js
137 ms
header-back.png
115 ms
header-logo.png
117 ms
main-back4.jpg
235 ms
160225.jpg
1068 ms
spacer.gif
119 ms
info-back2.png
233 ms
title-line.png
224 ms
point-blue.png
229 ms
point-white.png
235 ms
button-newsletter.png
336 ms
button-facebook.png
345 ms
button-twitter.png
348 ms
button-youtube.png
350 ms
button-google+.png
352 ms
button-rss.png
447 ms
lang-en.png
458 ms
lang-de.png
464 ms
lang-ru.png
467 ms
lang-it.png
465 ms
lang-fr.png
559 ms
lang-pl.png
572 ms
cal-desc-title-bottom.png
578 ms
widepage-back-bottom.png
581 ms
partner_01.png
582 ms
partner_16.png
669 ms
partner_02.png
687 ms
partner_03.png
693 ms
partner_10.png
695 ms
partner_07.png
697 ms
partner_20.png
778 ms
partner_05.png
797 ms
partner_14.png
806 ms
partner_17.png
807 ms
partner_11.png
810 ms
partner_12.png
889 ms
partner_21.png
898 ms
__utm.gif
11 ms
partner_04.png
820 ms
partner_24.png
822 ms
partner_06.png
821 ms
32 ms
partner_09.png
790 ms
partner_13.png
810 ms
partner_22.png
818 ms
partner_23.png
821 ms
150106.jpg
1525 ms
160112.jpg
1126 ms
160303.jpg
1616 ms
160304.jpg
1631 ms
highlink-back2.png
816 ms
widepage-back2.png
830 ms
line-dashed.png
838 ms
sipka1.png
842 ms
highlink-back11.png
938 ms
highlink-back3.png
952 ms
sipka2.png
1050 ms
highlink-back12.png
978 ms
footer-back-bottom.png
997 ms
footer-back.png
1056 ms
dark-bottom.css
6 ms
hvezdarna.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
Form elements do not have associated labels
Links do not have a discernible name
hvezdarna.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
hvezdarna.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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 Hvezdarna.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 Hvezdarna.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.
hvezdarna.cz
Open Graph description is not detected on the main page of Hvezdarna. 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: