4 sec in total
460 ms
3 sec
535 ms
Click here to check amazing Csfu content for Czech Republic. Otherwise, check out these important facts you probably never knew about csfu.cz
Visit csfu.czWe analyzed Csfu.cz page load time and found that the first response time was 460 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.
csfu.cz performance score
name
value
score
weighting
Value2.7 s
62/100
10%
Value3.3 s
71/100
25%
Value3.9 s
82/100
10%
Value50 ms
100/100
30%
Value0.002
100/100
15%
Value4.8 s
79/100
10%
460 ms
764 ms
238 ms
241 ms
240 ms
Our browser made a total of 38 requests to load all elements on the main page. We found that 87% of them (33 requests) were addressed to the original Csfu.cz, 5% (2 requests) were made to Staticxx.facebook.com and 3% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Csfu.cz.
Page size can be reduced by 102.3 kB (15%)
669.6 kB
567.3 kB
In fact, the total size of Csfu.cz main page is 669.6 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. 35% of websites need less resources to load. Images take 593.4 kB which makes up the majority of the site volume.
Potential reduce by 33.0 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 33.0 kB or 78% of the original size.
Potential reduce by 41.2 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. Csfu images are well optimized though.
Potential reduce by 7.1 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 7.1 kB or 79% of the original size.
Potential reduce by 21.0 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. Csfu.cz needs all CSS files to be minified and compressed as it can save up to 21.0 kB or 83% of the original size.
We found no issues to fix!
36
36
The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Csfu. According to our analytics all requests are already optimized.
csfu.cz
460 ms
www.csfu.cz
764 ms
style.css
238 ms
ddsmoothmenu.css
241 ms
ddsmoothmenu-klub.css
240 ms
jquery.min.js
33 ms
ddsmoothmenu.js
247 ms
back.jpg
226 ms
logo_csfu.png
352 ms
logo_wako.png
470 ms
1_5523608460574_big.jpg
355 ms
zip.png
250 ms
320_4d551247ed96c_big.jpg
365 ms
sk.png
461 ms
pdf.png
485 ms
408_4cf2f7feea0dd_big.jpg
706 ms
1884_50c77b8dad703_big.jpg
705 ms
149_5264e13b0cc4c_big.jpg
713 ms
101_4d80d4a6353ec_big.jpg
811 ms
72_505da4ef8e093_big.jpg
818 ms
114_512124fe26e36_big.jpg
843 ms
xlsx.png
927 ms
214_5122814e4d1f0_big.jpg
1057 ms
443_big.jpg
1290 ms
442_small.jpg
1161 ms
438_small.jpg
1169 ms
424_small.jpg
1193 ms
444_small.jpg
1258 ms
417_small.jpg
1407 ms
427_small.jpg
1501 ms
433_small.jpg
1521 ms
all.js
166 ms
7.jpg
1482 ms
down.gif
1427 ms
right.gif
1459 ms
139 ms
xd_arbiter.php
133 ms
xd_arbiter.php
260 ms
csfu.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
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
csfu.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
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
csfu.cz SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
robots.txt is not valid
CS
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Csfu.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 Csfu.cz main page’s claimed encoding is iso-8859-1. 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.
csfu.cz
Open Graph description is not detected on the main page of Csfu. 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: