Tools & Wizards About Us
onsov.cz screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

onsov.cz

Onšov žije - Přehled kulturních a sportovních akcí v Onšově a okolí

Page Load Speed

6.9 sec in total

First Response

405 ms

Resources Loaded

4.4 sec

Page Rendered

2.1 sec

onsov.cz screenshot

About Website

Visit onsov.cz now to see the best up-to-date Onsov content and also check out these interesting facts you probably never knew about onsov.cz

Přehled kulturních a sportovních akcí v Onšově a okolí

Visit onsov.cz

Key Findings

We analyzed Onsov.cz page load time and found that the first response time was 405 ms and then it took 6.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

onsov.cz performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value10.2 s

0/100

25%

SI (Speed Index)

Value5.2 s

59/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.086

93/100

15%

TTI (Time to Interactive)

Value6.4 s

60/100

10%

Network Requests Diagram

onsov.cz

405 ms

onsov.cz

2494 ms

css

30 ms

foundation.min.css

636 ms

foundation-icons.css

420 ms

Our browser made a total of 98 requests to load all elements on the main page. We found that 98% of them (96 requests) were addressed to the original Onsov.cz, 1% (1 request) were made to Fonts.googleapis.com and 1% (1 request) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Onsov.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 270.5 kB (2%)

Content Size

12.8 MB

After Optimization

12.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Onsov.cz main page is 12.8 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. Images take 12.5 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 22.7 kB

  • Original 27.0 kB
  • After minification 26.2 kB
  • After compression 4.3 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 22.7 kB or 84% of the original size.

Image Optimization

-0%

Potential reduce by 9.4 kB

  • Original 12.5 MB
  • After minification 12.5 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. Onsov images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 89.6 kB

  • Original 138.3 kB
  • After minification 134.9 kB
  • After compression 48.6 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 89.6 kB or 65% of the original size.

CSS Optimization

-86%

Potential reduce by 148.7 kB

  • Original 173.0 kB
  • After minification 163.4 kB
  • After compression 24.3 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. Onsov.cz needs all CSS files to be minified and compressed as it can save up to 148.7 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (9%)

Requests Now

95

After Optimization

86

  • Images
  • JavaScript
  • CSS

The browser has sent 95 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Onsov. 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 from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

onsov.cz

onsov.cz

405 ms

onsov.cz

onsov.cz

2494 ms

css

css

30 ms

foundation.min.css

foundation.min.css

636 ms

foundation-icons.css

foundation-icons.css

420 ms

styl.css

styl.css

323 ms

photoswipe.css

photoswipe.css

316 ms

default-skin.css

default-skin.css

320 ms

css.js

css.js

429 ms

jquery.min.js

jquery.min.js

642 ms

photoswipe.min.js

photoswipe.min.js

534 ms

photoswipe-ui-default.min.js

photoswipe-ui-default.min.js

534 ms

initPhotoSwipeFromDOM.js

initPhotoSwipeFromDOM.js

535 ms

onsov.png

onsov.png

113 ms

20240615-kino.jpg

20240615-kino.jpg

325 ms

08.jpg

08.jpg

322 ms

18.jpg

18.jpg

320 ms

109.jpg

109.jpg

426 ms

01.jpg

01.jpg

539 ms

01.jpg

01.jpg

548 ms

107.jpg

107.jpg

446 ms

060.jpg

060.jpg

441 ms

046.jpg

046.jpg

637 ms

23.jpg

23.jpg

553 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUhiYA.ttf

TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUhiYA.ttf

18 ms

029.jpg

029.jpg

212 ms

050.jpg

050.jpg

118 ms

23.jpg

23.jpg

211 ms

58.jpg

58.jpg

212 ms

012.jpg

012.jpg

114 ms

04.jpg

04.jpg

419 ms

060.jpg

060.jpg

227 ms

032.jpg

032.jpg

226 ms

001.jpg

001.jpg

424 ms

005.jpg

005.jpg

325 ms

025.jpg

025.jpg

327 ms

51.jpg

51.jpg

334 ms

105.jpg

105.jpg

337 ms

157.jpg

157.jpg

433 ms

183.jpg

183.jpg

434 ms

195.jpg

195.jpg

442 ms

42.jpg

42.jpg

446 ms

85.jpg

85.jpg

633 ms

14.jpg

14.jpg

549 ms

18.jpg

18.jpg

650 ms

21.jpg

21.jpg

550 ms

68.jpg

68.jpg

556 ms

031.jpg

031.jpg

554 ms

07.jpg

07.jpg

665 ms

07.jpg

07.jpg

666 ms

058.jpg

058.jpg

667 ms

25.jpg

25.jpg

663 ms

01.jpg

01.jpg

851 ms

02.jpg

02.jpg

771 ms

02.jpg

02.jpg

771 ms

77.jpg

77.jpg

783 ms

044.jpg

044.jpg

784 ms

050.jpg

050.jpg

681 ms

01.jpg

01.jpg

788 ms

31.jpg

31.jpg

787 ms

15.jpg

15.jpg

781 ms

186.jpg

186.jpg

782 ms

178.jpg

178.jpg

778 ms

089.jpg

089.jpg

757 ms

065.jpg

065.jpg

795 ms

07.jpg

07.jpg

787 ms

055.jpg

055.jpg

776 ms

178.jpg

178.jpg

775 ms

080.jpg

080.jpg

680 ms

83.jpg

83.jpg

757 ms

08.jpg

08.jpg

771 ms

67.jpg

67.jpg

776 ms

16.jpg

16.jpg

704 ms

04.jpg

04.jpg

694 ms

13.jpg

13.jpg

685 ms

05.jpg

05.jpg

766 ms

21.jpg

21.jpg

778 ms

02.jpg

02.jpg

778 ms

077.jpg

077.jpg

676 ms

222.jpg

222.jpg

683 ms

07.jpg

07.jpg

678 ms

108.jpg

108.jpg

756 ms

030.jpg

030.jpg

702 ms

40.jpg

40.jpg

686 ms

085.jpg

085.jpg

675 ms

006.jpg

006.jpg

677 ms

01.jpg

01.jpg

676 ms

14.jpg

14.jpg

765 ms

041.jpg

041.jpg

670 ms

047.jpg

047.jpg

681 ms

111.jpg

111.jpg

664 ms

42.jpg

42.jpg

670 ms

06.jpg

06.jpg

671 ms

03.jpg

03.jpg

698 ms

018.jpg

018.jpg

659 ms

028.jpg

028.jpg

672 ms

53.jpg

53.jpg

668 ms

152.jpg

152.jpg

669 ms

Accessibility Review

onsov.cz accessibility score

94

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

Links do not have a discernible name

Best Practices

onsov.cz best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

onsov.cz SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

robots.txt is not valid

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 Onsov.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 Onsov.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

onsov.cz

Open Graph data is detected on the main page of Onsov. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: