Tools & Wizards About Us
cs.felk.cvut.cz screenshot

Report Summary

  • 42

    Performance

    Renders faster than
    61% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 85

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

cs.felk.cvut.cz

Department of Computer Science

Page Load Speed

5.3 sec in total

First Response

1.5 sec

Resources Loaded

3.3 sec

Page Rendered

493 ms

cs.felk.cvut.cz screenshot

About Website

Visit cs.felk.cvut.cz now to see the best up-to-date Cs Felk Cvut content for Czech Republic and also check out these interesting facts you probably never knew about cs.felk.cvut.cz

Visit cs.felk.cvut.cz

Key Findings

We analyzed Cs.felk.cvut.cz page load time and found that the first response time was 1.5 sec and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

cs.felk.cvut.cz performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

20/100

10%

LCP (Largest Contentful Paint)

Value5.5 s

20/100

25%

SI (Speed Index)

Value10.5 s

8/100

10%

TBT (Total Blocking Time)

Value610 ms

49/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value7.7 s

46/100

10%

Network Requests Diagram

cs.felk.cvut.cz

1476 ms

css

26 ms

css_7a86492ffdb65141e2ae5d3b16d9dd14_b4893e9c8b6e739a96639b034ce646ad.css

246 ms

js_cd757f15f4bc3e33ccd9b46b2170c0df_a920ad1d404407aa74c5524cdec0239a.js

484 ms

search.png

121 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 98% of them (41 requests) were addressed to the original Cs.felk.cvut.cz, 2% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Cs.felk.cvut.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 369.8 kB (14%)

Content Size

2.6 MB

After Optimization

2.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cs.felk.cvut.cz main page is 2.6 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. 50% of websites need less resources to load. Images take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 33.0 kB

  • Original 41.7 kB
  • After minification 35.6 kB
  • After compression 8.7 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. This page needs HTML code to be minified as it can gain 6.1 kB, which is 15% 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 33.0 kB or 79% of the original size.

Image Optimization

-4%

Potential reduce by 99.1 kB

  • Original 2.3 MB
  • After minification 2.2 MB

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. Cs Felk Cvut images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 134.8 kB

  • Original 192.9 kB
  • After minification 189.4 kB
  • After compression 58.0 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 134.8 kB or 70% of the original size.

CSS Optimization

-83%

Potential reduce by 102.9 kB

  • Original 123.4 kB
  • After minification 123.1 kB
  • After compression 20.5 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. Cs.felk.cvut.cz needs all CSS files to be minified and compressed as it can save up to 102.9 kB or 83% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

41

After Optimization

41

  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cs Felk Cvut. According to our analytics all requests are already optimized.

Network Requests Diagram

cs.felk.cvut.cz

cs.felk.cvut.cz

1476 ms

css

css

26 ms

css_7a86492ffdb65141e2ae5d3b16d9dd14_b4893e9c8b6e739a96639b034ce646ad.css

css_7a86492ffdb65141e2ae5d3b16d9dd14_b4893e9c8b6e739a96639b034ce646ad.css

246 ms

js_cd757f15f4bc3e33ccd9b46b2170c0df_a920ad1d404407aa74c5524cdec0239a.js

js_cd757f15f4bc3e33ccd9b46b2170c0df_a920ad1d404407aa74c5524cdec0239a.js

484 ms

search.png

search.png

121 ms

fel-logo-w-text.png

fel-logo-w-text.png

262 ms

1123-20150326-Michal-Pechoucek-cesky-rozhlas-s-cfotocredits.jpg

1123-20150326-Michal-Pechoucek-cesky-rozhlas-s-cfotocredits.jpg

354 ms

1205-malware2016.jpg

1205-malware2016.jpg

514 ms

1201-icitcs-2016.jpg

1201-icitcs-2016.jpg

476 ms

1153-media-1.jpg

1153-media-1.jpg

359 ms

1208-zelezny-cernoch.jpg

1208-zelezny-cernoch.jpg

559 ms

1097-1453465642-nej-2.jpg

1097-1453465642-nej-2.jpg

819 ms

1203-kittler.jpg

1203-kittler.jpg

472 ms

1165-2015-foto-Zelezny-cropped-2.jpg

1165-2015-foto-Zelezny-cropped-2.jpg

759 ms

1173-zilecky-soutez.jpg

1173-zilecky-soutez.jpg

823 ms

1204-soutez-cisco-foto.jpg

1204-soutez-cisco-foto.jpg

1070 ms

1014-news.jpg

1014-news.jpg

632 ms

1152-publikace-7.jpg

1152-publikace-7.jpg

674 ms

1209-news-CTUOpen2015.jpg

1209-news-CTUOpen2015.jpg

750 ms

1210-MG-1514.jpg

1210-MG-1514.jpg

906 ms

1172-new-europe-pechi.jpg

1172-new-europe-pechi.jpg

1108 ms

1166-Cap-na-MITna-web.jpg

1166-Cap-na-MITna-web.jpg

997 ms

1157-projekt-vino.jpg

1157-projekt-vino.jpg

1051 ms

1169-biomedcentral.jpg

1169-biomedcentral.jpg

1057 ms

1164-google-foto.jpg

1164-google-foto.jpg

1022 ms

1112-20150303-Dotyk-umela-inteligence.jpg

1112-20150303-Dotyk-umela-inteligence.jpg

1356 ms

1163-FulbrightCvut.jpg

1163-FulbrightCvut.jpg

1253 ms

1147-nclf.jpg

1147-nclf.jpg

1168 ms

1158-vanek-blindspot.jpg

1158-vanek-blindspot.jpg

1174 ms

1114-20150310-pridej-se-k-radu-situ.jpg

1114-20150310-pridej-se-k-radu-situ.jpg

1187 ms

1018-cig-logo-150DPI.jpg

1018-cig-logo-150DPI.jpg

1224 ms

1016-aic-2.jpg

1016-aic-2.jpg

1284 ms

1109-2015-Agentfly-foto-1.jpg

1109-2015-Agentfly-foto-1.jpg

1525 ms

1019-SEN-logo.jpg

1019-SEN-logo.jpg

1306 ms

1017-201501-logo-IDA-lat-na-webu.jpg

1017-201501-logo-IDA-lat-na-webu.jpg

1460 ms

1064-20141010-mixgene.jpg

1064-20141010-mixgene.jpg

1370 ms

1078-cykloplanovac.jpg

1078-cykloplanovac.jpg

1518 ms

1156-zelezny-kyborgove-budou.jpg

1156-zelezny-kyborgove-budou.jpg

1425 ms

1050-CGT.jpg

1050-CGT.jpg

1449 ms

fel-logo.png

fel-logo.png

1370 ms

fb_icon.png

fb_icon.png

1293 ms

tw_icon.png

tw_icon.png

1323 ms

Accessibility Review

cs.felk.cvut.cz accessibility score

83

Accessibility Issues

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

High

Buttons do not have an accessible name

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

cs.felk.cvut.cz best practices score

85

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

cs.felk.cvut.cz SEO score

92

Search Engine Optimization Advices

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

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cs.felk.cvut.cz can be misinterpreted by Google and other search engines. Our service has detected that English 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 Cs.felk.cvut.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.

Social Sharing Optimization

cs.felk.cvut.cz

Open Graph description is not detected on the main page of Cs Felk Cvut. 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: