Tools & Wizards About Us

Report Summary

  • 93

    Performance

    Renders faster than
    92% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

cnw.cz

CNW computer network s.r.o.

Page Load Speed

2.6 sec in total

First Response

393 ms

Resources Loaded

2.1 sec

Page Rendered

118 ms

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 393 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

cnw.cz performance score

93

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

75/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

86/100

25%

SI (Speed Index)

Value3.1 s

93/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.3 s

99/100

10%

Network Requests Diagram

cnw.cz

393 ms

cnw.cz

404 ms

mootools.js

695 ms

caption.js

708 ms

system.css

714 ms

Our browser made a total of 22 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 (808 ms) belongs to the original domain Cnw.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 60.3 kB (39%)

Content Size

154.7 kB

After Optimization

94.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cnw.cz main page is 154.7 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 10% of websites need less resources to load. Images take 99.9 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 7.7 kB

  • Original 10.0 kB
  • After minification 9.3 kB
  • After compression 2.3 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 7.7 kB or 77% of the original size.

Image Optimization

-16%

Potential reduce by 15.8 kB

  • Original 99.9 kB
  • After minification 84.2 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 15.8 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-75%

Potential reduce by 6.5 kB

  • Original 8.7 kB
  • After minification 6.8 kB
  • After compression 2.2 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 6.5 kB or 75% of the original size.

CSS Optimization

-84%

Potential reduce by 30.3 kB

  • Original 36.1 kB
  • After minification 26.4 kB
  • After compression 5.7 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 30.3 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (44%)

Requests Now

18

After Optimization

10

  • Images
  • JavaScript
  • CSS

The browser has sent 18 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 and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

cnw.cz accessibility score

73

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

cnw.cz best practices score

67

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

High

Browser errors were logged to the console

SEO Factors

cnw.cz SEO score

67

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

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

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: