7.3 sec in total
2.1 sec
5.1 sec
189 ms
Click here to check amazing Fu Osu content for Czech Republic. Otherwise, check out these important facts you probably never knew about fu.osu.cz
Visit fu.osu.czWe analyzed Fu.osu.cz page load time and found that the first response time was 2.1 sec and then it took 5.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.
fu.osu.cz performance score
name
value
score
weighting
Value6.7 s
2/100
10%
Value11.3 s
0/100
25%
Value7.8 s
23/100
10%
Value200 ms
89/100
30%
Value0.189
65/100
15%
Value7.6 s
46/100
10%
2052 ms
630 ms
999 ms
1000 ms
877 ms
Our browser made a total of 34 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Fu.osu.cz, 91% (31 requests) were made to Osu.cz and 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Fu.osu.cz.
Page size can be reduced by 186.4 kB (53%)
349.1 kB
162.7 kB
In fact, the total size of Fu.osu.cz main page is 349.1 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. Only 10% of websites need less resources to load. Javascripts take 151.3 kB which makes up the majority of the site volume.
Potential reduce by 31.2 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. This page needs HTML code to be minified as it can gain 9.5 kB, which is 26% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 31.2 kB or 86% of the original size.
Potential reduce by 12.0 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. Fu Osu images are well optimized though.
Potential reduce by 108.8 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 108.8 kB or 72% of the original size.
Potential reduce by 34.4 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. Fu.osu.cz needs all CSS files to be minified and compressed as it can save up to 34.4 kB or 85% of the original size.
Number of requests can be reduced by 19 (61%)
31
12
The browser has sent 31 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Fu Osu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
fu.osu.cz
2052 ms
celaou.css
630 ms
celaou_cz.css
999 ms
fu01.css
1000 ms
lightbox.css
877 ms
hornimenuosucz.js
881 ms
calendar.js
1003 ms
prototype.js
1806 ms
scriptaculous.js
1130 ms
lightbox.js
1131 ms
bg_hlava_all1.png
125 ms
bg_hlava_fu1.png
596 ms
bg_hlava_all2.png
241 ms
bg_hlava_fu2.png
615 ms
foto_hlava_50-02.jpg
613 ms
tecka.gif
249 ms
zavinac.gif
369 ms
search.gif
492 ms
vlajka-cz.gif
494 ms
vlajka-en.gif
613 ms
zavinac-pata.gif
741 ms
tecka-pata.gif
741 ms
bg_hlava_all3.png
831 ms
bg_hlava_ou3.png
977 ms
bg_telo-all.gif
854 ms
bg_telo2.gif
1099 ms
bg_telo2-stavovy.gif
1101 ms
li-menu.gif
984 ms
li-text.gif
1066 ms
pata-logo.gif
1100 ms
bg_pata_dole.gif
1210 ms
ga.js
33 ms
__utm.gif
23 ms
celaou-print.css
355 ms
fu.osu.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
fu.osu.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
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
fu.osu.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 doesn't use legible font sizes
Tap targets are not sized appropriately
CS
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Fu.osu.cz can be misinterpreted by Google and other search engines. Our service has detected that Czech is used on the page, and it does not match the claimed English language. Our system also found out that Fu.osu.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.
fu.osu.cz
Open Graph data is detected on the main page of Fu Osu. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: