Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 55% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

zivefirmy.cz

Největší nezávislý katalog českých firem - Živéfirmy.cz

Page Load Speed

4 sec in total

First Response

334 ms

Resources Loaded

3.4 sec

Page Rendered

245 ms

zivefirmy.cz screenshot

About Website

Click here to check amazing Zivefirmy content for Czech Republic. Otherwise, check out these important facts you probably never knew about zivefirmy.cz

Živé firmy v České republice

Visit zivefirmy.cz

Key Findings

We analyzed Zivefirmy.cz page load time and found that the first response time was 334 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

zivefirmy.cz performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

12/100

10%

LCP (Largest Contentful Paint)

Value11.0 s

0/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value330 ms

75/100

30%

CLS (Cumulative Layout Shift)

Value0.009

100/100

15%

TTI (Time to Interactive)

Value11.1 s

20/100

10%

Network Requests Diagram

zivefirmy.cz

334 ms

zivefirmy.cz

448 ms

www.zivefirmy.cz

903 ms

bootstrap.min.css

32 ms

fontawesome-all.min.css

323 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 43% of them (20 requests) were addressed to the original Zivefirmy.cz, 38% (18 requests) were made to Media.zivefirmy.cz and 6% (3 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Media.zivefirmy.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 353.5 kB (33%)

Content Size

1.1 MB

After Optimization

719.8 kB

In fact, the total size of Zivefirmy.cz main page is 1.1 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. 60% of websites need less resources to load. Images take 749.2 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 32.8 kB

  • Original 42.6 kB
  • After minification 34.5 kB
  • After compression 9.8 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 8.2 kB, which is 19% 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 32.8 kB or 77% of the original size.

Image Optimization

-14%

Potential reduce by 103.9 kB

  • Original 749.2 kB
  • After minification 645.3 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. Obviously, Zivefirmy needs image optimization as it can save up to 103.9 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

-72%

Potential reduce by 82.5 kB

  • Original 114.3 kB
  • After minification 114.3 kB
  • After compression 31.8 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 82.5 kB or 72% of the original size.

CSS Optimization

-80%

Potential reduce by 134.3 kB

  • Original 167.2 kB
  • After minification 163.2 kB
  • After compression 32.9 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. Zivefirmy.cz needs all CSS files to be minified and compressed as it can save up to 134.3 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (35%)

Requests Now

37

After Optimization

24

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zivefirmy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

zivefirmy.cz accessibility score

83

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

button, link, and menuitem elements do not have accessible names.

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

Image elements do not have [alt] attributes

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.

Best Practices

zivefirmy.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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

zivefirmy.cz SEO score

92

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 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 Zivefirmy.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 Zivefirmy.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 Zivefirmy. 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: