Tools & Wizards About Us
duelovky.cz screenshot

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

duelovky.cz

Duelovky.cz - nejnovější online hry zdarma

Page Load Speed

23.1 sec in total

First Response

295 ms

Resources Loaded

22.6 sec

Page Rendered

130 ms

duelovky.cz screenshot

About Website

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

Duelovky.cz - nejnovější online hry zdarma

Visit duelovky.cz

Key Findings

We analyzed Duelovky.cz page load time and found that the first response time was 295 ms and then it took 22.8 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 2 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

duelovky.cz performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value12.7 s

0/100

25%

SI (Speed Index)

Value10.9 s

6/100

10%

TBT (Total Blocking Time)

Value2,270 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.057

98/100

15%

TTI (Time to Interactive)

Value17.0 s

4/100

10%

Network Requests Diagram

duelovky.cz

295 ms

www.duelovky.cz

411 ms

js

153 ms

js

189 ms

analytics.js

30 ms

Our browser made a total of 106 requests to load all elements on the main page. We found that 37% of them (39 requests) were addressed to the original Duelovky.cz, 23% (24 requests) were made to Static.duelovky.cz and 8% (8 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (20 sec) relates to the external source C-d0.duelovky.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 551.2 kB (23%)

Content Size

2.4 MB

After Optimization

1.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Duelovky.cz main page is 2.4 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. 70% of websites need less resources to load. Javascripts take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 78.4 kB

  • Original 93.6 kB
  • After minification 62.4 kB
  • After compression 15.2 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 31.2 kB, which is 33% 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 78.4 kB or 84% of the original size.

Image Optimization

-3%

Potential reduce by 29.4 kB

  • Original 1.1 MB
  • After minification 1.0 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. Duelovky images are well optimized though.

JavaScript Optimization

-35%

Potential reduce by 438.3 kB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 801.5 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 438.3 kB or 35% of the original size.

CSS Optimization

-28%

Potential reduce by 5.1 kB

  • Original 18.2 kB
  • After minification 18.2 kB
  • After compression 13.1 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. Duelovky.cz needs all CSS files to be minified and compressed as it can save up to 5.1 kB or 28% of the original size.

Requests Breakdown

Number of requests can be reduced by 43 (44%)

Requests Now

97

After Optimization

54

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 97 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duelovky. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

duelovky.cz

duelovky.cz

295 ms

www.duelovky.cz

www.duelovky.cz

411 ms

js

js

153 ms

js

js

189 ms

analytics.js

analytics.js

30 ms

layout.min.css

layout.min.css

99 ms

envPatch.js

envPatch.js

200 ms

global.ashx

global.ashx

277 ms

session.ashx

session.ashx

356 ms

language.ashx

language.ashx

547 ms

main.min.js

main.min.js

706 ms

du.js

du.js

361 ms

advertisement.js

advertisement.js

368 ms

adsbygoogle.js

adsbygoogle.js

63 ms

home.js

home.js

365 ms

api.js

api.js

47 ms

recaptcha__cs.js

recaptcha__cs.js

112 ms

1e79abd14b73aeb91bc3228cc9e85d0a.png

1e79abd14b73aeb91bc3228cc9e85d0a.png

978 ms

bg.png

bg.png

169 ms

logo_duelovky-big.png

logo_duelovky-big.png

170 ms

search.png

search.png

168 ms

close.png

close.png

169 ms

loader.gif

loader.gif

170 ms

notifications.png

notifications.png

168 ms

categories.png

categories.png

239 ms

bigpoint_small.png

bigpoint_small.png

239 ms

upjers_small.png

upjers_small.png

241 ms

alawar_small.png

alawar_small.png

240 ms

pixel.gif

pixel.gif

242 ms

scrollbar.png

scrollbar.png

243 ms

cs.png

cs.png

326 ms

pixel.png

pixel.png

325 ms

left.png

left.png

325 ms

right.png

right.png

325 ms

close_white.png

close_white.png

329 ms

loader.gif

loader.gif

418 ms

corners.png

corners.png

411 ms

3678984a9c46f1872cfe73017545482d.png

3678984a9c46f1872cfe73017545482d.png

892 ms

splash58.png

splash58.png

470 ms

splash58.png

splash58.png

474 ms

splash58.png

splash58.png

472 ms

splash58.png

splash58.png

476 ms

splash58.png

splash58.png

555 ms

splash58.png

splash58.png

558 ms

splash58.png

splash58.png

562 ms

splash58.png

splash58.png

564 ms

splash58.png

splash58.png

641 ms

splash58.png

splash58.png

642 ms

splash58.png

splash58.png

649 ms

splash58.png

splash58.png

651 ms

splash58.png

splash58.png

726 ms

splash58.png

splash58.png

728 ms

splash58.png

splash58.png

736 ms

splash58.png

splash58.png

738 ms

splash58.png

splash58.png

811 ms

splash58.png

splash58.png

812 ms

splash58.png

splash58.png

823 ms

splash58.png

splash58.png

825 ms

splash58.png

splash58.png

896 ms

sdk.js

sdk.js

74 ms

getData.ashx

getData.ashx

568 ms

getLocal.aspx

getLocal.aspx

553 ms

tracker.htm

tracker.htm

331 ms

__utm.gif

__utm.gif

57 ms

user-types.png

user-types.png

327 ms

gcash-new-cs.png

gcash-new-cs.png

326 ms

gpoints-big.png

gpoints-big.png

332 ms

baby.png

baby.png

815 ms

ad.aspx

ad.aspx

914 ms

sdk.js

sdk.js

6 ms

ga.js

ga.js

4 ms

crossdomain.htm

crossdomain.htm

560 ms

adcode.js

adcode.js

87 ms

adContent.ashx

adContent.ashx

96 ms

show_ads_impl.js

show_ads_impl.js

85 ms

lg.php

lg.php

19958 ms

event.ashx

event.ashx

19965 ms

zrt_lookup.html

zrt_lookup.html

32 ms

ads

ads

569 ms

ads

ads

604 ms

ads

ads

837 ms

ads

ads

496 ms

ads

ads

440 ms

reactive_library.js

reactive_library.js

50 ms

ca-pub-5729181084189415

ca-pub-5729181084189415

83 ms

1859335732883778075

1859335732883778075

49 ms

load_preloaded_resource.js

load_preloaded_resource.js

48 ms

abg_lite.js

abg_lite.js

92 ms

window_focus.js

window_focus.js

92 ms

qs_click_protection.js

qs_click_protection.js

92 ms

ufs_web_display.js

ufs_web_display.js

31 ms

b747694df2d2942986b42fb021d7b6f3.js

b747694df2d2942986b42fb021d7b6f3.js

30 ms

icon.png

icon.png

29 ms

s

s

94 ms

feedback_grey600_24dp.png

feedback_grey600_24dp.png

93 ms

fullscreen_api_adapter.js

fullscreen_api_adapter.js

180 ms

interstitial_ad_frame.js

interstitial_ad_frame.js

188 ms

settings_grey600_24dp.png

settings_grey600_24dp.png

191 ms

css

css

159 ms

css

css

95 ms

ea8FacM9Wef3EJPWRrHjgE4B6CnlZxHVDv79pA.ttf

ea8FacM9Wef3EJPWRrHjgE4B6CnlZxHVDv79pA.ttf

38 ms

ea8IacM9Wef3EJPWRrHjgE4B6CnlZxHVBg3etBD7SQ.ttf

ea8IacM9Wef3EJPWRrHjgE4B6CnlZxHVBg3etBD7SQ.ttf

50 ms

bbpdwrw2duwLHMexCcMcUHHDjyS7r22JGOXnIJkhh1g.js

bbpdwrw2duwLHMexCcMcUHHDjyS7r22JGOXnIJkhh1g.js

15 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpyw.ttf

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrw2IJllpyw.ttf

22 ms

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpyw.ttf

4Ua_rENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RFD48TE63OOYKtrwEIJllpyw.ttf

44 ms

activeview

activeview

67 ms

Accessibility Review

duelovky.cz accessibility score

85

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

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

High

Form elements do not have associated labels

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

duelovky.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

duelovky.cz SEO score

69

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

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    N/A

  • Encoding

    UTF-8

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

duelovky.cz

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