Tools & Wizards About Us
ucetnictvi-on-line.cz screenshot

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

ucetnictvi-on-line.cz

Homepage - UOL

Page Load Speed

2.5 sec in total

First Response

280 ms

Resources Loaded

1.8 sec

Page Rendered

375 ms

ucetnictvi-on-line.cz screenshot

About Website

Welcome to ucetnictvi-on-line.cz homepage info - get ready to check Ucetnictvi On Line best content right away, or after learning these important things about ucetnictvi-on-line.cz

Visit ucetnictvi-on-line.cz

Key Findings

We analyzed Ucetnictvi-on-line.cz page load time and found that the first response time was 280 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

ucetnictvi-on-line.cz performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value13.3 s

0/100

25%

SI (Speed Index)

Value5.5 s

55/100

10%

TBT (Total Blocking Time)

Value530 ms

56/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.7 s

36/100

10%

Network Requests Diagram

ucetnictvi-on-line.cz

280 ms

www.uol.cz

556 ms

application-d13752e91f480ac30ad9a2f8702ce2768b394d27a7cdb87973990bbb945bdb06.css

161 ms

application-1954a5b23d37c94abc4ce4058646d24a14c16454dede24512c3f6ba70b9a1847.js

243 ms

conversion.js

37 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Ucetnictvi-on-line.cz, 52% (17 requests) were made to Uol.cz and 12% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (556 ms) relates to the external source Uol.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 161.0 kB (27%)

Content Size

586.7 kB

After Optimization

425.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ucetnictvi-on-line.cz main page is 586.7 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. 40% of websites need less resources to load. Images take 333.3 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 14.9 kB

  • Original 22.2 kB
  • After minification 19.9 kB
  • After compression 7.3 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 14.9 kB or 67% of the original size.

Image Optimization

-4%

Potential reduce by 14.4 kB

  • Original 333.3 kB
  • After minification 318.8 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. Ucetnictvi On Line images are well optimized though.

JavaScript Optimization

-47%

Potential reduce by 73.7 kB

  • Original 158.3 kB
  • After minification 158.3 kB
  • After compression 84.6 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 73.7 kB or 47% of the original size.

CSS Optimization

-80%

Potential reduce by 58.0 kB

  • Original 72.9 kB
  • After minification 72.6 kB
  • After compression 14.9 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. Ucetnictvi-on-line.cz needs all CSS files to be minified and compressed as it can save up to 58.0 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (16%)

Requests Now

25

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ucetnictvi On Line. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

ucetnictvi-on-line.cz

ucetnictvi-on-line.cz

280 ms

www.uol.cz

www.uol.cz

556 ms

application-d13752e91f480ac30ad9a2f8702ce2768b394d27a7cdb87973990bbb945bdb06.css

application-d13752e91f480ac30ad9a2f8702ce2768b394d27a7cdb87973990bbb945bdb06.css

161 ms

application-1954a5b23d37c94abc4ce4058646d24a14c16454dede24512c3f6ba70b9a1847.js

application-1954a5b23d37c94abc4ce4058646d24a14c16454dede24512c3f6ba70b9a1847.js

243 ms

conversion.js

conversion.js

37 ms

retargeting.js

retargeting.js

346 ms

css

css

27 ms

dc.js

dc.js

43 ms

60 ms

pronajem-kancelare-330-m-pekarska-628-14-praha-jinonice-praha-5-os-pek14-330m-dsc06342-ib1ea34e6723e179c0cca26b5cd2a08cd.jpg_280x230_c

pronajem-kancelare-330-m-pekarska-628-14-praha-jinonice-praha-5-os-pek14-330m-dsc06342-ib1ea34e6723e179c0cca26b5cd2a08cd.jpg_280x230_c

394 ms

body-1e69b56bc09ba4cbc6d275f34eb238b78e4de5bc9c7176b2df93ae6914c2b5db.png

body-1e69b56bc09ba4cbc6d275f34eb238b78e4de5bc9c7176b2df93ae6914c2b5db.png

192 ms

cabala_big-06c76b09f1dc0fa4f65c718454315609f23b6be44e7b3e96766a659296fc821c.jpg

cabala_big-06c76b09f1dc0fa4f65c718454315609f23b6be44e7b3e96766a659296fc821c.jpg

192 ms

kohoutova_big-412b029746e9ec7be8894a6f6ce61401b06e4c9380bed05f876e80df944e10d6.jpg

kohoutova_big-412b029746e9ec7be8894a6f6ce61401b06e4c9380bed05f876e80df944e10d6.jpg

434 ms

kadlec_big-d83b41fcbde39190ee4f997af4c64447cc44655e1257d0607f322edf33c66d78.jpg

kadlec_big-d83b41fcbde39190ee4f997af4c64447cc44655e1257d0607f322edf33c66d78.jpg

350 ms

uolrevue16-881c709d77f81d28dceb237cf2f43050db38f255248768f4b6aec1bfd2b8c093.png

uolrevue16-881c709d77f81d28dceb237cf2f43050db38f255248768f4b6aec1bfd2b8c093.png

428 ms

pronajem-kancelare-330-m-pekarska-628-14-praha-jinonice-praha-5-os-pek14-330m-dsc-0179-i419c07ad3edc8c43f913c592a23da390.jpg_280x230_c

pronajem-kancelare-330-m-pekarska-628-14-praha-jinonice-praha-5-os-pek14-330m-dsc-0179-i419c07ad3edc8c43f913c592a23da390.jpg_280x230_c

394 ms

__utm.gif

__utm.gif

16 ms

174 ms

home-70d06cff202c0202d25f1e792c7c7b14aab7ebb35246e506c538f6bb265dd8a4.jpg

home-70d06cff202c0202d25f1e792c7c7b14aab7ebb35246e506c538f6bb265dd8a4.jpg

321 ms

logo-7556f373d5d5686f0b4776d3db0b8051ca29d4b9975258c0e02d137f9f11f6db.gif

logo-7556f373d5d5686f0b4776d3db0b8051ca29d4b9975258c0e02d137f9f11f6db.gif

85 ms

hp-boxes-e8d94d47f2d909d1a8de34b66b9a6f4c64182a70aa1e0ff374f0da136388aa85.gif

hp-boxes-e8d94d47f2d909d1a8de34b66b9a6f4c64182a70aa1e0ff374f0da136388aa85.gif

162 ms

section-orange-39e0decdf537b98ba8c182ca566622571d32856883f5ee0bf7e9b8d75116a9eb.png

section-orange-39e0decdf537b98ba8c182ca566622571d32856883f5ee0bf7e9b8d75116a9eb.png

165 ms

section-38d3c849cfc6bd7924c5696707129b130ed8d5577c8b4e3606938956ebbe1596.png

section-38d3c849cfc6bd7924c5696707129b130ed8d5577c8b4e3606938956ebbe1596.png

241 ms

testimonials-30877a8d2f7eae77c559418ad331f5cf98100c9c1dec33c88c8911ac4beaeda3.png

testimonials-30877a8d2f7eae77c559418ad331f5cf98100c9c1dec33c88c8911ac4beaeda3.png

242 ms

butbul-c9231a6b9f17977313591b1045c7669449dd11759c4b0aeaf7f07d770004b6aa.png

butbul-c9231a6b9f17977313591b1045c7669449dd11759c4b0aeaf7f07d770004b6aa.png

243 ms

footer-99884322448bcd3e9e667b699bfae2bba4a546a6a4012e71fd210094022fbdc3.gif

footer-99884322448bcd3e9e667b699bfae2bba4a546a6a4012e71fd210094022fbdc3.gif

320 ms

retargeting

retargeting

122 ms

u-WUoqrET9fUeobQW7jkRaCWcynf_cDxXwCLxiixG1c.ttf

u-WUoqrET9fUeobQW7jkRaCWcynf_cDxXwCLxiixG1c.ttf

7 ms

DXI1ORHCpsQm3Vp6mXoaTdqQynqKV_9Plp7mupa0S4g.ttf

DXI1ORHCpsQm3Vp6mXoaTdqQynqKV_9Plp7mupa0S4g.ttf

11 ms

MTP_ySUJH_bn48VBG8sNStqQynqKV_9Plp7mupa0S4g.ttf

MTP_ySUJH_bn48VBG8sNStqQynqKV_9Plp7mupa0S4g.ttf

41 ms

k3k702ZOKiLJc3WVjuplzNqQynqKV_9Plp7mupa0S4g.ttf

k3k702ZOKiLJc3WVjuplzNqQynqKV_9Plp7mupa0S4g.ttf

13 ms

fontawesome-webfont-a7c7e4930090e038a280fd61d88f0dc03dad4aeaedbd8c9be3dd9aa4c3b6f8d1.woff

fontawesome-webfont-a7c7e4930090e038a280fd61d88f0dc03dad4aeaedbd8c9be3dd9aa4c3b6f8d1.woff

477 ms

nr-892.min.js

nr-892.min.js

17 ms

Accessibility Review

ucetnictvi-on-line.cz accessibility score

62

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 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.

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible 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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

ucetnictvi-on-line.cz best practices score

75

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

ucetnictvi-on-line.cz SEO score

85

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

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

    CS

  • Language Claimed

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ucetnictvi-on-line.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 Ucetnictvi-on-line.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

ucetnictvi-on-line.cz

Open Graph description is not detected on the main page of Ucetnictvi On Line. 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: