Tools & Wizards About Us
cnw.cz screenshot

Report Summary

  • 69

    Performance

    Renders faster than
    81% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

cnw.cz

CNW computer network s.r.o.

Page Load Speed

4 sec in total

First Response

1.1 sec

Resources Loaded

2.6 sec

Page Rendered

252 ms

cnw.cz screenshot

About Website

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

CNW computer network s.r.o. , správa sítí

Visit cnw.cz

Key Findings

We analyzed Cnw.cz page load time and found that the first response time was 1.1 sec and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

cnw.cz performance score

69

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

81/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

79/100

25%

SI (Speed Index)

Value4.7 s

69/100

10%

TBT (Total Blocking Time)

Value640 ms

47/100

30%

CLS (Cumulative Layout Shift)

Value0.04

99/100

15%

TTI (Time to Interactive)

Value6.6 s

57/100

10%

Network Requests Diagram

cnw.cz

1123 ms

mootools.js

697 ms

caption.js

206 ms

system.css

205 ms

general.css

309 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that all of those requests were addressed to Cnw.cz and no external sources were called. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Cnw.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 126.4 kB (51%)

Content Size

248.4 kB

After Optimization

122.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cnw.cz main page is 248.4 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. Only 5% of websites need less resources to load. Images take 101.6 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 17.3 kB

  • Original 22.1 kB
  • After minification 20.8 kB
  • After compression 4.8 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 17.3 kB or 78% of the original size.

Image Optimization

-14%

Potential reduce by 13.9 kB

  • Original 101.6 kB
  • After minification 87.7 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, CNW needs image optimization as it can save up to 13.9 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-73%

Potential reduce by 64.6 kB

  • Original 88.2 kB
  • After minification 84.5 kB
  • After compression 23.6 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 64.6 kB or 73% of the original size.

CSS Optimization

-84%

Potential reduce by 30.6 kB

  • Original 36.4 kB
  • After minification 26.6 kB
  • After compression 5.9 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. Cnw.cz needs all CSS files to be minified and compressed as it can save up to 30.6 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (63%)

Requests Now

24

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CNW. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cnw.cz

cnw.cz

1123 ms

mootools.js

mootools.js

697 ms

caption.js

caption.js

206 ms

system.css

system.css

205 ms

general.css

general.css

309 ms

template.css

template.css

515 ms

script.js

script.js

406 ms

mod_bannerslider.css

mod_bannerslider.css

105 ms

mod_bannerslider.js

mod_bannerslider.js

203 ms

Header.jpg

Header.jpg

1115 ms

Page-BgTexture.jpg

Page-BgTexture.jpg

103 ms

Page-BgGradient.jpg

Page-BgGradient.jpg

106 ms

Page-BgGlare.png

Page-BgGlare.png

307 ms

Sheet-s.png

Sheet-s.png

105 ms

Sheet-h.png

Sheet-h.png

103 ms

Sheet-v.png

Sheet-v.png

102 ms

Sheet-c.png

Sheet-c.png

203 ms

nav.png

nav.png

201 ms

MenuItem.png

MenuItem.png

204 ms

BlockHeader.png

BlockHeader.png

207 ms

cnw-podpora.png

cnw-podpora.png

208 ms

cnw-email.png

cnw-email.png

301 ms

BlockContentBullets.png

BlockContentBullets.png

303 ms

Footer.png

Footer.png

291 ms

Button.png

Button.png

295 ms

Accessibility Review

cnw.cz accessibility score

74

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-*] attributes do not match their roles

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

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

cnw.cz best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

SEO Factors

cnw.cz SEO score

100

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

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 Cnw.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 Cnw.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

cnw.cz

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