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ujop.cuni.cz screenshot

Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

ujop.cuni.cz

Univerzita Karlova - ÚJOP UK - Ústav jazykové a odborné přípravy

Page Load Speed

7.7 sec in total

First Response

522 ms

Resources Loaded

6.6 sec

Page Rendered

559 ms

ujop.cuni.cz screenshot

About Website

Click here to check amazing Ujop Cuni content for Czech Republic. Otherwise, check out these important facts you probably never knew about ujop.cuni.cz

Visit ujop.cuni.cz

Key Findings

We analyzed Ujop.cuni.cz page load time and found that the first response time was 522 ms and then it took 7.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

ujop.cuni.cz performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.4 s

1/100

10%

LCP (Largest Contentful Paint)

Value16.4 s

0/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value790 ms

37/100

30%

CLS (Cumulative Layout Shift)

Value0.138

79/100

15%

TTI (Time to Interactive)

Value15.6 s

6/100

10%

Network Requests Diagram

ujop.cuni.cz

522 ms

UJOP-1.html

544 ms

cookie-consent.js

818 ms

jquery.min.js

766 ms

fonts.css

296 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 66% of them (50 requests) were addressed to the original Ujop.cuni.cz, 14% (11 requests) were made to Atlas.is.cuni.cz and 7% (5 requests) were made to Tarantula.ruk.cuni.cz. The less responsive or slowest element that took the longest time to load (3.6 sec) belongs to the original domain Ujop.cuni.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 972.0 kB (24%)

Content Size

4.1 MB

After Optimization

3.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ujop.cuni.cz main page is 4.1 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. 45% of websites need less resources to load. Images take 3.2 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 45.4 kB

  • Original 57.1 kB
  • After minification 50.8 kB
  • After compression 11.7 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 6.3 kB, which is 11% 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 45.4 kB or 80% of the original size.

Image Optimization

-10%

Potential reduce by 329.7 kB

  • Original 3.2 MB
  • After minification 2.8 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. Ujop Cuni images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 435.8 kB

  • Original 672.0 kB
  • After minification 668.9 kB
  • After compression 236.2 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 435.8 kB or 65% of the original size.

CSS Optimization

-85%

Potential reduce by 161.1 kB

  • Original 189.7 kB
  • After minification 157.0 kB
  • After compression 28.6 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. Ujop.cuni.cz needs all CSS files to be minified and compressed as it can save up to 161.1 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (51%)

Requests Now

73

After Optimization

36

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ujop Cuni. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

ujop.cuni.cz

ujop.cuni.cz

522 ms

UJOP-1.html

UJOP-1.html

544 ms

cookie-consent.js

cookie-consent.js

818 ms

jquery.min.js

jquery.min.js

766 ms

fonts.css

fonts.css

296 ms

jquery.bxslider.min.js

jquery.bxslider.min.js

426 ms

jquery.bxslider.css

jquery.bxslider.css

322 ms

jsDatePick_ltr.min.css

jsDatePick_ltr.min.css

491 ms

Collapse.min.js

Collapse.min.js

385 ms

collapse.min.css

collapse.min.css

675 ms

SimpleCollapse.min.js

SimpleCollapse.min.js

690 ms

medailon.min.css

medailon.min.css

729 ms

js

js

74 ms

additional.css

additional.css

800 ms

CC2C32.css

CC2C32.css

1147 ms

makeActiveEmail1.js

makeActiveEmail1.js

711 ms

calendar.js

calendar.js

782 ms

jsDatePick.min.1.3.cz.js

jsDatePick.min.1.3.cz.js

1124 ms

default.js

default.js

1068 ms

bootstrap.min.js

bootstrap.min.js

1002 ms

web.js

web.js

925 ms

js

js

63 ms

container_CPOJRu6k.js

container_CPOJRu6k.js

859 ms

UJOP-380-version1-whapp_icon.png

UJOP-380-version1-whapp_icon.png

467 ms

UJOP-28-version1-fb1.png

UJOP-28-version1-fb1.png

775 ms

UJOP-28-version1-instagram1.png

UJOP-28-version1-instagram1.png

786 ms

UJOP-28-version1-youtube1.png

UJOP-28-version1-youtube1.png

793 ms

UJOP-29-version1-alte_logo_130mm.png

UJOP-29-version1-alte_logo_130mm.png

1124 ms

bgn.jpg

bgn.jpg

242 ms

UJOP-1-version1-afoto.jpg

UJOP-1-version1-afoto.jpg

819 ms

menu.png

menu.png

431 ms

en.svg

en.svg

352 ms

ru.svg

ru.svg

357 ms

make-font-smaller.jpg

make-font-smaller.jpg

358 ms

make-font-bigger.jpg

make-font-bigger.jpg

575 ms

fb.png

fb.png

667 ms

instagram.png

instagram.png

680 ms

twitter-new.png

twitter-new.png

688 ms

youtube.png

youtube.png

746 ms

linked-in.png

linked-in.png

866 ms

rss-icon.png

rss-icon.png

981 ms

navigator.png

navigator.png

978 ms

CC2C32.jpg

CC2C32.jpg

1076 ms

UJOP-449-version1-afoto.jpg

UJOP-449-version1-afoto.jpg

1412 ms

UJOP-539-version1-afoto.jpg

UJOP-539-version1-afoto.jpg

2300 ms

UJOP-541-version1-afoto.jpg

UJOP-541-version1-afoto.jpg

2180 ms

UJOP-540-version1-afoto.jpg

UJOP-540-version1-afoto.jpg

2136 ms

UJOP-543-version1-afoto.jpg

UJOP-543-version1-afoto.jpg

1940 ms

UJOP-549-version1-afoto.jpg

UJOP-549-version1-afoto.jpg

1708 ms

UJOP-552-version1-afoto.jpg

UJOP-552-version1-afoto.jpg

2037 ms

AKTUALITY-22151-version1-afoto_newlayout.jpg

AKTUALITY-22151-version1-afoto_newlayout.jpg

2136 ms

AKTUALITY-22009-version1-afoto_newlayout.jpg

AKTUALITY-22009-version1-afoto_newlayout.jpg

2430 ms

AKTUALITY-21872-version1-afoto_newlayout.png

AKTUALITY-21872-version1-afoto_newlayout.png

3513 ms

AKTUALITY-21764-version1-afoto_newlayout.jpg

AKTUALITY-21764-version1-afoto_newlayout.jpg

2647 ms

embed

embed

247 ms

UJOPEN-170-version1-01_study.png

UJOPEN-170-version1-01_study.png

3429 ms

UJOPEN-170-version1-02_study.jpg

UJOPEN-170-version1-02_study.jpg

3130 ms

UJOPEN-170-version1-03_exam.jpg

UJOPEN-170-version1-03_exam.jpg

3589 ms

AKTUALITY-12881-version1-afoto_newlayout.jpg

AKTUALITY-12881-version1-afoto_newlayout.jpg

3371 ms

scroll-to-top.jpg

scroll-to-top.jpg

2945 ms

fbevents.js

fbevents.js

145 ms

menu-circle.png

menu-circle.png

3204 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

3522 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

158 ms

js

js

39 ms

matomo.php

matomo.php

149 ms

matomo.php

matomo.php

293 ms

configs.php

configs.php

271 ms

configs.php

configs.php

306 ms

print.css

print.css

300 ms

matomo.php

matomo.php

157 ms

matomo.php

matomo.php

157 ms

configs.php

configs.php

107 ms

configs.php

configs.php

111 ms

configs.php

configs.php

178 ms

configs.php

configs.php

176 ms

Accessibility Review

ujop.cuni.cz accessibility score

87

Accessibility Issues

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.

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

ujop.cuni.cz best practices score

67

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

ujop.cuni.cz SEO score

54

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ujop.cuni.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 Ujop.cuni.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

ujop.cuni.cz

Open Graph description is not detected on the main page of Ujop Cuni. 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: