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tf.czu.cz screenshot

Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 46% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 81

    SEO

    Google-friendlier than
    43% of websites

tf.czu.cz

Technická fakulta ČZU v Praze

Page Load Speed

1.5 sec in total

First Response

368 ms

Resources Loaded

962 ms

Page Rendered

145 ms

tf.czu.cz screenshot

About Website

Click here to check amazing Tf Czu content for Czech Republic. Otherwise, check out these important facts you probably never knew about tf.czu.cz

Visit tf.czu.cz

Key Findings

We analyzed Tf.czu.cz page load time and found that the first response time was 368 ms and then it took 1.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

tf.czu.cz performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

8/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value9.0 s

14/100

10%

TBT (Total Blocking Time)

Value750 ms

39/100

30%

CLS (Cumulative Layout Shift)

Value0.31

38/100

15%

TTI (Time to Interactive)

Value13.6 s

11/100

10%

Network Requests Diagram

tf.czu.cz

368 ms

funkce.js

119 ms

main.css

236 ms

img_top.jpg

474 ms

trp.gif

234 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that all of those requests were addressed to Tf.czu.cz and no external sources were called. The less responsive or slowest element that took the longest time to load (474 ms) belongs to the original domain Tf.czu.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.1 kB (3%)

Content Size

81.3 kB

After Optimization

79.2 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Tf.czu.cz main page is 81.3 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 78.1 kB which makes up the majority of the site volume.

HTML Optimization

-65%

Potential reduce by 1.7 kB

  • Original 2.6 kB
  • After minification 2.5 kB
  • After compression 905 B

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 1.7 kB or 65% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 78.1 kB
  • After minification 78.1 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. Tf Czu images are well optimized though.

CSS Optimization

-65%

Potential reduce by 398 B

  • Original 609 B
  • After minification 458 B
  • After compression 211 B

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. Tf.czu.cz needs all CSS files to be minified and compressed as it can save up to 398 B or 65% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

  • Images
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tf Czu. According to our analytics all requests are already optimized.

Network Requests Diagram

tf.czu.cz

tf.czu.cz

368 ms

funkce.js

funkce.js

119 ms

main.css

main.css

236 ms

img_top.jpg

img_top.jpg

474 ms

trp.gif

trp.gif

234 ms

web_serv.gif

web_serv.gif

238 ms

mail_sluz.gif

mail_sluz.gif

234 ms

web_apl.gif

web_apl.gif

236 ms

vzdal_sprav.gif

vzdal_sprav.gif

240 ms

pix.gif

pix.gif

347 ms

Accessibility Review

tf.czu.cz accessibility score

78

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

ARIA IDs are not unique

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

tf.czu.cz best practices score

83

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

High

Page has valid source maps

SEO Factors

tf.czu.cz SEO score

81

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tf.czu.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 Tf.czu.cz main page’s claimed encoding is windows-1250. 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.

Social Sharing Optimization

tf.czu.cz

Open Graph description is not detected on the main page of Tf Czu. 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: