4.6 sec in total
358 ms
3.8 sec
386 ms
Welcome to yfu.cz homepage info - get ready to check YFU best content for Czech Republic right away, or after learning these important things about yfu.cz
YFU je nezisková organizace, která nabízí studium pro středoškoláky formou studijních pobytů v zahraničí. Poznej novou kulturu, nauč se nový jazyk, osamostatni se a rozšíř si obzory.
Visit yfu.czWe analyzed Yfu.cz page load time and found that the first response time was 358 ms and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.
yfu.cz performance score
name
value
score
weighting
Value4.6 s
14/100
10%
Value7.0 s
6/100
25%
Value5.6 s
53/100
10%
Value110 ms
97/100
30%
Value0.047
99/100
15%
Value6.3 s
60/100
10%
358 ms
1108 ms
37 ms
1306 ms
1535 ms
Our browser made a total of 89 requests to load all elements on the main page. We found that 28% of them (25 requests) were addressed to the original Yfu.cz, 33% (29 requests) were made to Maps.googleapis.com and 9% (8 requests) were made to Maps.gstatic.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Yfu.cz.
Page size can be reduced by 1.0 MB (42%)
2.4 MB
1.4 MB
In fact, the total size of Yfu.cz main page is 2.4 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 1.0 MB which makes up the majority of the site volume.
Potential reduce by 95.7 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 95.7 kB or 88% of the original size.
Potential reduce by 31.6 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. YFU images are well optimized though.
Potential reduce by 739.1 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 739.1 kB or 72% of the original size.
Potential reduce by 146.8 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. Yfu.cz needs all CSS files to be minified and compressed as it can save up to 146.8 kB or 46% of the original size.
Number of requests can be reduced by 29 (37%)
78
49
The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of YFU. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and as a result speed up the page load time.
yfu.cz
358 ms
www.yfu.cz
1108 ms
css
37 ms
web-0be1a034521d96b1b98d25aaa03a983a.css
1306 ms
web-713f29bcf57b47b5a40f626cee3d1896.js
1535 ms
lib.js
240 ms
js
55 ms
u-WUoqrET9fUeobQW7jkRaCWcynf_cDxXwCLxiixG1c.ttf
26 ms
MTP_ySUJH_bn48VBG8sNStqQynqKV_9Plp7mupa0S4g.ttf
74 ms
EInbV5DfGHOiMmvb1Xr-htqQynqKV_9Plp7mupa0S4g.ttf
77 ms
print.css
138 ms
dc.js
66 ms
logo.png
126 ms
btn-search.png
126 ms
li-dot.png
126 ms
003367_68_037000.jpg
960 ms
003740_68_043049.jpg
829 ms
003363_68_036960.jpg
1011 ms
ico1.png
301 ms
ico2.png
305 ms
ico3.png
305 ms
tecky_standart.png
388 ms
s2_orange.png
387 ms
003567_69_041411.jpg
387 ms
tecky_standart2.png
502 ms
s3_red.png
502 ms
003694_69_042621.jpg
501 ms
002614_69_034911.jpg
736 ms
key_icon.png
619 ms
fb.png
623 ms
insta.png
734 ms
common.js
48 ms
map.js
74 ms
util.js
109 ms
onion.js
108 ms
__utm.gif
31 ms
ViewportInfoService.GetViewportInfo
34 ms
stats.js
31 ms
controls.js
25 ms
infowindow.js
24 ms
transparent.png
108 ms
css
101 ms
vt
98 ms
marker.js
34 ms
vt
73 ms
vt
74 ms
vt
76 ms
vt
85 ms
vt
85 ms
vt
109 ms
vt
127 ms
vt
104 ms
vt
122 ms
vt
128 ms
vt
127 ms
vt
136 ms
vt
135 ms
vt
153 ms
vt
157 ms
vt
153 ms
google4.png
36 ms
mapcnt6.png
69 ms
sv5.png
50 ms
vt
156 ms
mapslt
130 ms
mapslt
145 ms
mapslt
158 ms
mapslt
163 ms
mapslt
173 ms
mapslt
180 ms
mapslt
185 ms
mapslt
177 ms
mapslt
190 ms
mapslt
183 ms
mapslt
186 ms
mapslt
189 ms
mapslt
180 ms
mapslt
190 ms
mapslt
181 ms
mapslt
211 ms
tmapctrl.png
76 ms
cb_scout5.png
84 ms
tmapctrl4.png
78 ms
imgs8.png
85 ms
zN7GBFwfMP4uA6AR0HCoLQ.ttf
55 ms
RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf
69 ms
Hgo13k-tfSpn0qi1SFdUfaCWcynf_cDxXwCLxiixG1c.ttf
81 ms
d-6IYplOFocCacKzxwXSOKCWcynf_cDxXwCLxiixG1c.ttf
81 ms
AuthenticationService.Authenticate
269 ms
yfu.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
Image elements do not have [alt] attributes
Links do not have a discernible name
yfu.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
Missing source maps for large first-party JavaScript
yfu.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
CS
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Yfu.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 Yfu.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.
yfu.cz
Open Graph description is not detected on the main page of YFU. 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: