Report Summary

  • 78

    Performance

    Renders faster than
    86% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

instalace-charvat.cz

Instalace Charvát

Page Load Speed

4.2 sec in total

First Response

777 ms

Resources Loaded

3 sec

Page Rendered

423 ms

instalace-charvat.cz screenshot

About Website

Welcome to instalace-charvat.cz homepage info - get ready to check Instalace Charvat best content right away, or after learning these important things about instalace-charvat.cz

Instalatér Charvát, topenář, čištění kanalizace, čištění odpadů, únik vody

Visit instalace-charvat.cz

Key Findings

We analyzed Instalace-charvat.cz page load time and found that the first response time was 777 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

instalace-charvat.cz performance score

78

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.4 s

71/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

57/100

25%

SI (Speed Index)

Value8.1 s

21/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value2.4 s

98/100

10%

Network Requests Diagram

instalace-charvat.cz

777 ms

style.css

100 ms

lightbox.css

201 ms

prototype.js

205 ms

scriptaculous.js

196 ms

Our browser made a total of 64 requests to load all elements on the main page. We found that 94% of them (60 requests) were addressed to the original Instalace-charvat.cz, 3% (2 requests) were made to Google-analytics.com and 2% (1 request) were made to Vysouseni-odvlhcovani-podlah.cz. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Instalace-charvat.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 160.7 kB (12%)

Content Size

1.4 MB

After Optimization

1.2 MB

In fact, the total size of Instalace-charvat.cz main page is 1.4 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. 40% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 20.0 kB

  • Original 26.5 kB
  • After minification 24.3 kB
  • After compression 6.6 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 20.0 kB or 75% of the original size.

Image Optimization

-2%

Potential reduce by 18.8 kB

  • Original 1.2 MB
  • After minification 1.2 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. Instalace Charvat images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 111.4 kB

  • Original 163.6 kB
  • After minification 139.7 kB
  • After compression 52.2 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 111.4 kB or 68% of the original size.

CSS Optimization

-77%

Potential reduce by 10.5 kB

  • Original 13.5 kB
  • After minification 11.8 kB
  • After compression 3.1 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. Instalace-charvat.cz needs all CSS files to be minified and compressed as it can save up to 10.5 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (32%)

Requests Now

63

After Optimization

43

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Instalace Charvat. 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 as a result speed up the page load time.

Accessibility Review

instalace-charvat.cz accessibility score

68

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

instalace-charvat.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

instalace-charvat.cz SEO score

77

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 Instalace-charvat.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 Instalace-charvat.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 Instalace Charvat. 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: