Report Summary

  • 8

    Performance

    Renders faster than
    31% of other websites

  • 57

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    29% of websites

  • 84

    SEO

    Google-friendlier than
    60% of websites

diit.cz

Diit.cz - Vybráno z IT

Page Load Speed

5 sec in total

First Response

510 ms

Resources Loaded

3.8 sec

Page Rendered

740 ms

diit.cz screenshot

About Website

Welcome to diit.cz homepage info - get ready to check Diit best content for Czech Republic right away, or after learning these important things about diit.cz

Horké novinky a recenze ze světa spotřební elektroniky a počítačových her. Přečtěte si pravidelně publikované články, blogy o tom, co právě teď letí v IT světě!

Visit diit.cz

Key Findings

We analyzed Diit.cz page load time and found that the first response time was 510 ms and then it took 4.5 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

diit.cz performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value25.7 s

0/100

25%

SI (Speed Index)

Value11.5 s

5/100

10%

TBT (Total Blocking Time)

Value5,080 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.274

44/100

15%

TTI (Time to Interactive)

Value26.5 s

0/100

10%

Network Requests Diagram

diit.cz

510 ms

css__BJ6Ou6QsBRtnFTmxaakamOIS8n4QswDP2XnnZ1sxtaM__NBuvkP6eInGIkb1aJvUHx5PX79XApuxBDkk_77W5tYk__qQtXqxbqFl1GP9a-DLPNj9YhuU5petq565QeEYgWHUg.css

228 ms

css__Q8QPkZUsUcEJG1EnnOfYR9kpJw4deMy0Jc0wNQ8h63w__z24cjiETobHAZXaiUlFDn-RazbMTZWxXw24W2r80kmQ__qQtXqxbqFl1GP9a-DLPNj9YhuU5petq565QeEYgWHUg.css

225 ms

css__OmVAcwp-MzEcCdY0PxuntGUIpBkeolJlbOox_AWNUFo__BM4gXsPa_gBAA0FFoPeNCafme_ojmeO3ALpQTcm8Wm8__qQtXqxbqFl1GP9a-DLPNj9YhuU5petq565QeEYgWHUg.css

229 ms

css__2ZXzsedMsdK5YrG9PltZpYia3AZX6J25_jNYisTARmY__Yd3gSkl262nXrDHU8v28bC5cEqUohfdxSohWZHhrhFc__qQtXqxbqFl1GP9a-DLPNj9YhuU5petq565QeEYgWHUg.css

235 ms

Our browser made a total of 277 requests to load all elements on the main page. We found that 51% of them (140 requests) were addressed to the original Diit.cz, 33% (92 requests) were made to Openads.aira.cz and 3% (8 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (1.4 sec) relates to the external source Openads.aira.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (28%)

Content Size

4.1 MB

After Optimization

3.0 MB

In fact, the total size of Diit.cz main page is 4.1 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 3.1 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 196.1 kB

  • Original 235.5 kB
  • After minification 221.4 kB
  • After compression 39.4 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. 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 196.1 kB or 83% of the original size.

Image Optimization

-14%

Potential reduce by 418.4 kB

  • Original 3.1 MB
  • After minification 2.7 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. Obviously, Diit needs image optimization as it can save up to 418.4 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

-66%

Potential reduce by 471.1 kB

  • Original 713.6 kB
  • After minification 623.2 kB
  • After compression 242.5 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 471.1 kB or 66% of the original size.

CSS Optimization

-77%

Potential reduce by 86.3 kB

  • Original 111.7 kB
  • After minification 108.6 kB
  • After compression 25.4 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. Diit.cz needs all CSS files to be minified and compressed as it can save up to 86.3 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 141 (52%)

Requests Now

270

After Optimization

129

The browser has sent 270 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Diit. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 97 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

diit.cz accessibility score

57

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

Buttons do not have an accessible name

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

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

Best Practices

diit.cz best practices score

58

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

Displays images with incorrect aspect ratio

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

diit.cz SEO score

84

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

    CS

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Diit.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 Diit.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 Diit. 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: