Tools & Wizards About Us
doczz.cz screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

doczz.cz

Služba ukládání a zveřejňování dokumentů - doczz.cz

Page Load Speed

1.9 sec in total

First Response

22 ms

Resources Loaded

1.7 sec

Page Rendered

212 ms

doczz.cz screenshot

About Website

Visit doczz.cz now to see the best up-to-date Do Cz Z content for Czech Republic and also check out these interesting facts you probably never knew about doczz.cz

Služba ukládání a zveřejňování dokumentů bez omezení prostoru na disku. Více než sto podporovaných formátů.

Visit doczz.cz

Key Findings

We analyzed Doczz.cz page load time and found that the first response time was 22 ms and then it took 1.9 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

doczz.cz performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

45/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

45/100

25%

SI (Speed Index)

Value6.8 s

34/100

10%

TBT (Total Blocking Time)

Value1,420 ms

15/100

30%

CLS (Cumulative Layout Shift)

Value0.023

100/100

15%

TTI (Time to Interactive)

Value13.8 s

10/100

10%

Network Requests Diagram

doczz.cz

22 ms

doczz.cz

396 ms

css

32 ms

style.css

340 ms

style1.css

332 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 35% of them (15 requests) were addressed to the original Doczz.cz, 40% (17 requests) were made to S1.doczz.cz and 9% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (828 ms) belongs to the original domain Doczz.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 101.1 kB (21%)

Content Size

483.8 kB

After Optimization

382.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Doczz.cz main page is 483.8 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. 55% of websites need less resources to load. Javascripts take 335.4 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 17.8 kB

  • Original 23.9 kB
  • After minification 20.0 kB
  • After compression 6.1 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 3.9 kB, which is 16% 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 17.8 kB or 74% of the original size.

Image Optimization

-21%

Potential reduce by 7.7 kB

  • Original 36.7 kB
  • After minification 29.0 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. Obviously, Do Cz Z needs image optimization as it can save up to 7.7 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-23%

Potential reduce by 75.5 kB

  • Original 335.4 kB
  • After minification 335.4 kB
  • After compression 259.9 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 75.5 kB or 23% of the original size.

CSS Optimization

-0%

Potential reduce by 105 B

  • Original 87.7 kB
  • After minification 87.7 kB
  • After compression 87.6 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. Doczz.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 6 (17%)

Requests Now

35

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Do Cz Z. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

doczz.cz

doczz.cz

22 ms

doczz.cz

doczz.cz

396 ms

css

css

32 ms

style.css

style.css

340 ms

style1.css

style1.css

332 ms

adsbygoogle.js

adsbygoogle.js

115 ms

script.js

script.js

413 ms

FileAPI.min.js

FileAPI.min.js

330 ms

script1.js

script1.js

332 ms

slotcar_library.js

slotcar_library.js

85 ms

analytics.js

analytics.js

102 ms

000303505_1-c1366840c8ce4e264f4999496ce7fe56-300x500.png

000303505_1-c1366840c8ce4e264f4999496ce7fe56-300x500.png

117 ms

logo.png

logo.png

389 ms

search.png

search.png

386 ms

figure1.png

figure1.png

391 ms

figure2.png

figure2.png

394 ms

figure3.png

figure3.png

391 ms

file.png

file.png

404 ms

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000190233_1-d7689ed7d2cc13477f1cdcc0d585808a-300x500.png

132 ms

000075989_1-f63db5338e6164c054dd42afec2f33dd-300x500.png

000075989_1-f63db5338e6164c054dd42afec2f33dd-300x500.png

144 ms

000150401_1-e4ae7ff56373a04ee7cbc1cae61547f5-300x500.png

000150401_1-e4ae7ff56373a04ee7cbc1cae61547f5-300x500.png

144 ms

000165057_1-4c9a6f8f63c1d651a49280ea8db5dccf-300x500.png

000165057_1-4c9a6f8f63c1d651a49280ea8db5dccf-300x500.png

142 ms

000080149_1-a102358efb6026daeab142c1c569fa54-300x500.png

000080149_1-a102358efb6026daeab142c1c569fa54-300x500.png

140 ms

000178297_1-05ee473cbda84b1134da0179088e386c-300x500.png

000178297_1-05ee473cbda84b1134da0179088e386c-300x500.png

143 ms

000052844_1-cd39ac1359d774819fcb9d2adbeb4665-300x500.png

000052844_1-cd39ac1359d774819fcb9d2adbeb4665-300x500.png

142 ms

000241388_1-7b397872aa1d5aba2a4b3a8152775065-300x500.png

000241388_1-7b397872aa1d5aba2a4b3a8152775065-300x500.png

149 ms

000385969_1-e948bbb45773d711335197e08c210445-300x500.png

000385969_1-e948bbb45773d711335197e08c210445-300x500.png

152 ms

000150147_1-de5b474f3bfc8e19af9c3f1ca2a04395-300x500.png

000150147_1-de5b474f3bfc8e19af9c3f1ca2a04395-300x500.png

151 ms

000117597_1-b82d4e174769b92da1dfc7788988f87d-300x500.png

000117597_1-b82d4e174769b92da1dfc7788988f87d-300x500.png

150 ms

000329185_1-fc7e611fdda45a0505c194048c0d809f-300x500.png

000329185_1-fc7e611fdda45a0505c194048c0d809f-300x500.png

153 ms

000282486_1-5796fc9c53c533202ecc9ae081ada649-300x500.png

000282486_1-5796fc9c53c533202ecc9ae081ada649-300x500.png

153 ms

000259868_1-a5900c7d34e8ee2ef10a367ac14259e3-300x500.png

000259868_1-a5900c7d34e8ee2ef10a367ac14259e3-300x500.png

157 ms

000091777_1-c2f8a1b5cf3cd54e5bb53d3264a904c3-300x500.png

000091777_1-c2f8a1b5cf3cd54e5bb53d3264a904c3-300x500.png

159 ms

000091296_1-7f586d08891b9fb89c1770a6a5c4e192-300x500.png

000091296_1-7f586d08891b9fb89c1770a6a5c4e192-300x500.png

159 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0C4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0C4k.woff

40 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4k.woff

49 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4k.woff

58 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1y4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1y4k.woff

63 ms

watch.js

watch.js

5 ms

up.png

up.png

628 ms

awesome.woff

awesome.woff

828 ms

collect

collect

15 ms

js

js

70 ms

Accessibility Review

doczz.cz accessibility score

76

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.

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

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Best Practices

doczz.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

doczz.cz SEO score

91

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

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 Doczz.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 Doczz.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

doczz.cz

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