Tools & Wizards About Us
slevax.cz screenshot

Report Summary

  • 72

    Performance

    Renders faster than
    82% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

slevax.cz

SlevaX.cz

Page Load Speed

6.3 sec in total

First Response

378 ms

Resources Loaded

4 sec

Page Rendered

1.9 sec

slevax.cz screenshot

About Website

Visit slevax.cz now to see the best up-to-date SlevaX content for Czech Republic and also check out these interesting facts you probably never knew about slevax.cz

Služba SlevaX každý den sleduje aktuální nabídku slevových serverů a všechny slevy přináší v přehledném podání na jednom místě.

Visit slevax.cz

Key Findings

We analyzed Slevax.cz page load time and found that the first response time was 378 ms and then it took 5.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

slevax.cz performance score

72

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

60/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

85/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value710 ms

42/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.7 s

80/100

10%

Network Requests Diagram

slevax.cz

378 ms

www.slevax.cz

839 ms

style.css

259 ms

jquery.min.js

39 ms

jquery.cookies.2.2.0.min.js

304 ms

Our browser made a total of 119 requests to load all elements on the main page. We found that 91% of them (108 requests) were addressed to the original Slevax.cz, 4% (5 requests) were made to Google-analytics.com and 2% (2 requests) were made to Partner.googleadservices.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Slevax.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 75.3 kB (10%)

Content Size

791.8 kB

After Optimization

716.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Slevax.cz main page is 791.8 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. 55% of websites need less resources to load. Images take 665.2 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 61.8 kB

  • Original 72.0 kB
  • After minification 69.9 kB
  • After compression 10.2 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 61.8 kB or 86% of the original size.

Image Optimization

-0%

Potential reduce by 1.8 kB

  • Original 665.2 kB
  • After minification 663.4 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. SlevaX images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 6.3 kB

  • Original 47.7 kB
  • After minification 46.8 kB
  • After compression 41.4 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 6.3 kB or 13% of the original size.

CSS Optimization

-77%

Potential reduce by 5.4 kB

  • Original 6.9 kB
  • After minification 5.2 kB
  • After compression 1.6 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. Slevax.cz needs all CSS files to be minified and compressed as it can save up to 5.4 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (8%)

Requests Now

116

After Optimization

107

  • Images
  • JavaScript
  • CSS

The browser has sent 116 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SlevaX. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

slevax.cz

slevax.cz

378 ms

www.slevax.cz

www.slevax.cz

839 ms

style.css

style.css

259 ms

jquery.min.js

jquery.min.js

39 ms

jquery.cookies.2.2.0.min.js

jquery.cookies.2.2.0.min.js

304 ms

js.js

js.js

305 ms

google_service.js

google_service.js

51 ms

google_ads.js

google_ads.js

59 ms

bg2.jpg

bg2.jpg

130 ms

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129 ms

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344 ms

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271 ms

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450 ms

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446 ms

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343 ms

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358 ms

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470 ms

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593 ms

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678 ms

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682 ms

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577 ms

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581 ms

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690 ms

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799 ms

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796 ms

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806 ms

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902 ms

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906 ms

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801 ms

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934 ms

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935 ms

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937 ms

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942 ms

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1011 ms

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1012 ms

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1040 ms

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1043 ms

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1083 ms

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1090 ms

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1128 ms

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1134 ms

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1150 ms

gtm.js

gtm.js

96 ms

ads

ads

114 ms

analytics.js

analytics.js

96 ms

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1039 ms

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1094 ms

linkid.js

linkid.js

12 ms

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914 ms

ga.js

ga.js

17 ms

watch.js

watch.js

14 ms

collect

collect

34 ms

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__utm.gif

26 ms

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1013 ms

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908 ms

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915 ms

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830 ms

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875 ms

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874 ms

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928 ms

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838 ms

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827 ms

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846 ms

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885 ms

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786 ms

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820 ms

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827 ms

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728 ms

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762 ms

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873 ms

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780 ms

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706 ms

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721 ms

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698 ms

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729 ms

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755 ms

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773 ms

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723 ms

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925 ms

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900 ms

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733 ms

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720 ms

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729 ms

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714 ms

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750 ms

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784 ms

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787 ms

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789 ms

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816 ms

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793 ms

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792 ms

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743 ms

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775 ms

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775 ms

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776 ms

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756 ms

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755 ms

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747 ms

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782 ms

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781 ms

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769 ms

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738 ms

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722 ms

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765 ms

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766 ms

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742 ms

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734 ms

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742 ms

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724 ms

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777 ms

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877 ms

sprites1011.png

sprites1011.png

723 ms

bg-m2.png

bg-m2.png

704 ms

Accessibility Review

slevax.cz accessibility score

83

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.

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

slevax.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

slevax.cz SEO score

75

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    N/A

  • Encoding

    UTF-8

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

slevax.cz

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