Tools & Wizards About Us
worldclass.cz screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

worldclass.cz

World Class

Page Load Speed

3.9 sec in total

First Response

440 ms

Resources Loaded

3.2 sec

Page Rendered

313 ms

worldclass.cz screenshot

About Website

Welcome to worldclass.cz homepage info - get ready to check World Class best content for Czech Republic right away, or after learning these important things about worldclass.cz

Světová třída – váš průvodce kultivovaným životním stylu. Exkluzivní obsah z oblasti módy, cestování, kultury a více. Připojte se k nám!

Visit worldclass.cz

Key Findings

We analyzed Worldclass.cz page load time and found that the first response time was 440 ms and then it took 3.5 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

worldclass.cz performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

45/100

10%

LCP (Largest Contentful Paint)

Value3.8 s

55/100

25%

SI (Speed Index)

Value8.4 s

18/100

10%

TBT (Total Blocking Time)

Value3,380 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value13.5 s

11/100

10%

Network Requests Diagram

worldclass.cz

440 ms

worldclass.cz

471 ms

styles.css

200 ms

skin.css

227 ms

adsbygoogle.js

105 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 30% of them (18 requests) were addressed to the original Worldclass.cz, 20% (12 requests) were made to Googleads.g.doubleclick.net and 18% (11 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (750 ms) belongs to the original domain Worldclass.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 196.4 kB (22%)

Content Size

878.0 kB

After Optimization

681.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Worldclass.cz main page is 878.0 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. 60% of websites need less resources to load. Javascripts take 664.6 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 44.2 kB

  • Original 53.7 kB
  • After minification 53.7 kB
  • After compression 9.5 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 44.2 kB or 82% of the original size.

Image Optimization

-0%

Potential reduce by 18 B

  • Original 154.9 kB
  • After minification 154.9 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. World Class images are well optimized though.

JavaScript Optimization

-23%

Potential reduce by 151.4 kB

  • Original 664.6 kB
  • After minification 664.6 kB
  • After compression 513.2 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 151.4 kB or 23% of the original size.

CSS Optimization

-16%

Potential reduce by 788 B

  • Original 4.9 kB
  • After minification 4.9 kB
  • After compression 4.1 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. Worldclass.cz needs all CSS files to be minified and compressed as it can save up to 788 B or 16% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (34%)

Requests Now

56

After Optimization

37

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of World Class. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

worldclass.cz

worldclass.cz

440 ms

worldclass.cz

worldclass.cz

471 ms

styles.css

styles.css

200 ms

skin.css

skin.css

227 ms

adsbygoogle.js

adsbygoogle.js

105 ms

wc-small.webp

wc-small.webp

332 ms

show_ads_impl.js

show_ads_impl.js

235 ms

pitny-rezim-je-pri-sportu-hodne-dulezity-small.webp

pitny-rezim-je-pri-sportu-hodne-dulezity-small.webp

140 ms

letni-sporty-ktere-jsou-u-nas-hodne-oblibene-small.webp

letni-sporty-ktere-jsou-u-nas-hodne-oblibene-small.webp

141 ms

kettlebell-je-velice-praktickou-pomuckou-pro-posilovani-small.webp

kettlebell-je-velice-praktickou-pomuckou-pro-posilovani-small.webp

317 ms

gde4132d4f36791b071289836c836ce975af311fd5a204367d5c0059ad133a2daf0120d5e07020f105bd65daa8d7cac47d0b4f036b9b963b052f33e5132888729-1280-large.webp

gde4132d4f36791b071289836c836ce975af311fd5a204367d5c0059ad133a2daf0120d5e07020f105bd65daa8d7cac47d0b4f036b9b963b052f33e5132888729-1280-large.webp

405 ms

inline-brusleni-posili-vase-telo-ve-vsech-smerech-large.webp

inline-brusleni-posili-vase-telo-ve-vsech-smerech-large.webp

371 ms

kettlebell-je-velice-praktickou-pomuckou-pro-posilovani-large.webp

kettlebell-je-velice-praktickou-pomuckou-pro-posilovani-large.webp

629 ms

keto-dieta-je-zalozena-na-nizkosacharidove-strave-large.webp

keto-dieta-je-zalozena-na-nizkosacharidove-strave-large.webp

532 ms

chuze-jako-prinosna-pohybova-aktivita-large.webp

chuze-jako-prinosna-pohybova-aktivita-large.webp

527 ms

pitny-rezim-je-pri-sportu-hodne-dulezity-large.webp

pitny-rezim-je-pri-sportu-hodne-dulezity-large.webp

421 ms

bojove-sporty-ziskavaji-na-velike-oblibe-large.webp

bojove-sporty-ziskavaji-na-velike-oblibe-large.webp

485 ms

letni-sporty-ktere-jsou-u-nas-hodne-oblibene-large.webp

letni-sporty-ktere-jsou-u-nas-hodne-oblibene-large.webp

737 ms

obleceni-na-kolo-neni-radno-podcenovat-large.webp

obleceni-na-kolo-neni-radno-podcenovat-large.webp

537 ms

cyklistika-znate-vsechny-jeji-odnoze-large.webp

cyklistika-znate-vsechny-jeji-odnoze-large.webp

750 ms

css2

css2

40 ms

zrt_lookup.html

zrt_lookup.html

69 ms

ads

ads

741 ms

ads

ads

467 ms

8c927ae55f7ea4b10e6902b5bd363ad5.js

8c927ae55f7ea4b10e6902b5bd363ad5.js

43 ms

load_preloaded_resource.js

load_preloaded_resource.js

39 ms

dcb78cbc72597c244d00d345a60d48d7.js

dcb78cbc72597c244d00d345a60d48d7.js

38 ms

abg_lite.js

abg_lite.js

82 ms

window_focus.js

window_focus.js

88 ms

qs_click_protection.js

qs_click_protection.js

90 ms

ufs_web_display.js

ufs_web_display.js

30 ms

5ede81f180d657c41f3d51ee07b344c6.js

5ede81f180d657c41f3d51ee07b344c6.js

79 ms

s

s

10 ms

icon.png

icon.png

8 ms

css

css

67 ms

reactive_library.js

reactive_library.js

198 ms

ca-pub-6122204646002237

ca-pub-6122204646002237

164 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpy8.woff

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpy8.woff

21 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpy8.woff

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpy8.woff

26 ms

activeview

activeview

129 ms

XKVjlGMZ-9Co2xOMMN0j_EFrFyX9juKw-kmGvwQcBeY.js

XKVjlGMZ-9Co2xOMMN0j_EFrFyX9juKw-kmGvwQcBeY.js

43 ms

sodar

sodar

199 ms

ads

ads

546 ms

ads

ads

538 ms

ads

ads

489 ms

ads

ads

397 ms

ads

ads

611 ms

ads

ads

516 ms

ads

ads

626 ms

6993071268267839702

6993071268267839702

177 ms

feedback_grey600_24dp.png

feedback_grey600_24dp.png

95 ms

fullscreen_api_adapter.js

fullscreen_api_adapter.js

83 ms

interstitial_ad_frame.js

interstitial_ad_frame.js

81 ms

one_click_handler_one_afma.js

one_click_handler_one_afma.js

82 ms

9516049183485776185

9516049183485776185

167 ms

settings_grey600_24dp.png

settings_grey600_24dp.png

43 ms

sodar2.js

sodar2.js

32 ms

runner.html

runner.html

13 ms

aframe

aframe

79 ms

activeview

activeview

93 ms

Accessibility Review

worldclass.cz accessibility score

88

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

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.

Best Practices

worldclass.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

High

Page has valid source maps

SEO Factors

worldclass.cz SEO score

98

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

High

Tap targets are not sized appropriately

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 Worldclass.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 Worldclass.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

worldclass.cz

Open Graph description is not detected on the main page of World Class. 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: