Report Summary

  • 58

    Performance

    Renders faster than
    74% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    47% of websites

  • 96

    SEO

    Google-friendlier than
    93% of websites

420on.cz

Все о Чехии: новости, афиша, аналитика на 420on.cz

Page Load Speed

7.4 sec in total

First Response

1.3 sec

Resources Loaded

5.5 sec

Page Rendered

602 ms

420on.cz screenshot

About Website

Click here to check amazing 420 On content for Russia. Otherwise, check out these important facts you probably never knew about 420on.cz

Информационный портал 420on.cz предоставляет самую подробную информацию о Праге и Чехии: афиша, прогноз погоды, каталог компаний, новости достопримечательности, информация для туристов и иммигрантов

Visit 420on.cz

Key Findings

We analyzed 420on.cz page load time and found that the first response time was 1.3 sec and then it took 6.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

420on.cz performance score

58

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value1.9 s

97/100

25%

SI (Speed Index)

Value6.9 s

33/100

10%

TBT (Total Blocking Time)

Value1,420 ms

15/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value14.7 s

8/100

10%

Network Requests Diagram

420on.cz

1299 ms

js

21 ms

head.js

1192 ms

application-b15b87196dbeb99cc632f585a908d050.css

434 ms

application-0848869272520d95ba541237af63e8c7.js

545 ms

Our browser made a total of 120 requests to load all elements on the main page. We found that 53% of them (63 requests) were addressed to the original 420on.cz, 5% (6 requests) were made to Mh6.adriver.ru and 4% (5 requests) were made to Ad.adriver.ru. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain 420on.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (27%)

Content Size

3.9 MB

After Optimization

2.8 MB

In fact, the total size of 420on.cz main page is 3.9 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. Images take 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 75.3 kB

  • Original 95.9 kB
  • After minification 94.8 kB
  • After compression 20.6 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 75.3 kB or 79% of the original size.

Image Optimization

-1%

Potential reduce by 14.3 kB

  • Original 2.5 MB
  • After minification 2.5 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. 420 On images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 394.9 kB

  • Original 590.8 kB
  • After minification 583.1 kB
  • After compression 195.9 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 394.9 kB or 67% of the original size.

CSS Optimization

-87%

Potential reduce by 576.5 kB

  • Original 660.2 kB
  • After minification 332.7 kB
  • After compression 83.7 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. 420on.cz needs all CSS files to be minified and compressed as it can save up to 576.5 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 41 (38%)

Requests Now

109

After Optimization

68

The browser has sent 109 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 420 On. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

420on.cz accessibility score

93

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

Links do not have a discernible name

Best Practices

420on.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

420on.cz SEO score

96

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    RU

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 420on.cz can be misinterpreted by Google and other search engines. Our service has detected that Russian 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 420on.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 420 On. 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: