Tools & Wizards About Us

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 80

    SEO

    Google-friendlier than
    42% of websites

dajsport.cz

DAJSPORT.cz - Elektrokola, kola, lyže, sportovní vybavení - online prodej

Page Load Speed

4 sec in total

First Response

395 ms

Resources Loaded

3.3 sec

Page Rendered

266 ms

About Website

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

Elektrokola, kola, lyže, sportovní vybavení. Velký výběr, výhodné ceny. Jsme tu pro Vás rádi Vám poradíme s výběrem.

Visit dajsport.cz

Key Findings

We analyzed Dajsport.cz page load time and found that the first response time was 395 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

dajsport.cz performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

5/100

10%

LCP (Largest Contentful Paint)

Value12.0 s

0/100

25%

SI (Speed Index)

Value9.0 s

14/100

10%

TBT (Total Blocking Time)

Value450 ms

62/100

30%

CLS (Cumulative Layout Shift)

Value0.024

100/100

15%

TTI (Time to Interactive)

Value10.0 s

27/100

10%

Network Requests Diagram

dajsport.cz

395 ms

www.dajsport.cz

1013 ms

gtm.js

57 ms

sablona.css

337 ms

dajsport.css

388 ms

Our browser made a total of 70 requests to load all elements on the main page. We found that 89% of them (62 requests) were addressed to the original Dajsport.cz, 4% (3 requests) were made to Themes.googleusercontent.com and 3% (2 requests) were made to Apis.google.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Dajsport.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 135.3 kB (14%)

Content Size

984.1 kB

After Optimization

848.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dajsport.cz main page is 984.1 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. 50% of websites need less resources to load. Images take 570.7 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 114.6 kB

  • Original 129.6 kB
  • After minification 118.6 kB
  • After compression 14.9 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 114.6 kB or 88% of the original size.

Image Optimization

-1%

Potential reduce by 5.7 kB

  • Original 570.7 kB
  • After minification 565.0 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. DAJSPORT images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 2.1 kB

  • Original 217.4 kB
  • After minification 217.4 kB
  • After compression 215.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-19%

Potential reduce by 12.8 kB

  • Original 66.4 kB
  • After minification 66.4 kB
  • After compression 53.6 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. Dajsport.cz needs all CSS files to be minified and compressed as it can save up to 12.8 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (26%)

Requests Now

65

After Optimization

48

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DAJSPORT. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

dajsport.cz accessibility score

88

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-hidden="true"] elements contain focusable descendents

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.

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

dajsport.cz best practices score

67

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

SEO Factors

dajsport.cz SEO score

80

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

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    CS

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dajsport.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 Dajsport.cz main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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