Report Summary

  • 54

    Performance

    Renders faster than
    72% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

3net.cz

3net.cz - doména je registrována

Page Load Speed

4.7 sec in total

First Response

448 ms

Resources Loaded

4 sec

Page Rendered

252 ms

3net.cz screenshot

About Website

Welcome to 3net.cz homepage info - get ready to check 3 Net best content right away, or after learning these important things about 3net.cz

S virtualizací využijte lépe své zdroje. Pracujte efektivně s naším ERP. Expandujte pomocí cloudu. To vše a mnohem na kvalitním hostingu a profesionální péči od nás. Budete spokojeni.

Visit 3net.cz

Key Findings

We analyzed 3net.cz page load time and found that the first response time was 448 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

3net.cz performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

33/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

58/100

25%

SI (Speed Index)

Value3.6 s

87/100

10%

TBT (Total Blocking Time)

Value1,100 ms

23/100

30%

CLS (Cumulative Layout Shift)

Value0.034

100/100

15%

TTI (Time to Interactive)

Value6.4 s

60/100

10%

Network Requests Diagram

3net.cz

448 ms

www.infinity.cz

908 ms

common.css

276 ms

jquery-ui-1.10.1.custom.css

277 ms

uniform_base.css

265 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original 3net.cz, 76% (61 requests) were made to Infinity.cz and 4% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source Infinity.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 602.5 kB (30%)

Content Size

2.0 MB

After Optimization

1.4 MB

In fact, the total size of 3net.cz main page is 2.0 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. 45% of websites need less resources to load. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 54.5 kB

  • Original 67.9 kB
  • After minification 56.8 kB
  • After compression 13.4 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 11.1 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 54.5 kB or 80% of the original size.

Image Optimization

-5%

Potential reduce by 68.7 kB

  • Original 1.3 MB
  • After minification 1.3 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. 3 Net images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 328.2 kB

  • Original 444.8 kB
  • After minification 361.6 kB
  • After compression 116.7 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 328.2 kB or 74% of the original size.

CSS Optimization

-86%

Potential reduce by 151.2 kB

  • Original 175.8 kB
  • After minification 148.8 kB
  • After compression 24.6 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. 3net.cz needs all CSS files to be minified and compressed as it can save up to 151.2 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (53%)

Requests Now

73

After Optimization

34

The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 3 Net. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

3net.cz accessibility score

93

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

Best Practices

3net.cz best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

3net.cz SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

    N/A

  • Language Claimed

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 3net.cz can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Czech. Our system also found out that 3net.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 3 Net. 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: