Report Summary

  • 79

    Performance

    Renders faster than
    86% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 46% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

e-zatepleni.cz

e-zatepleni.cz | Tepeln? izolace | Fas?dn? polystyren, om?tky, ?tuky a st?rky

Page Load Speed

2 sec in total

First Response

401 ms

Resources Loaded

1.5 sec

Page Rendered

143 ms

e-zatepleni.cz screenshot

About Website

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

Internetov? obchod www.e-zatepleni.cz se specializac? na zateplen? a zateplov?n? domu a novou fas?du

Visit e-zatepleni.cz

Key Findings

We analyzed E-zatepleni.cz page load time and found that the first response time was 401 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

e-zatepleni.cz performance score

79

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

67/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

46/100

25%

SI (Speed Index)

Value3.0 s

94/100

10%

TBT (Total Blocking Time)

Value110 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.3 s

73/100

10%

Network Requests Diagram

e-zatepleni.cz

401 ms

www.e-zatepleni.cz

415 ms

style.css.php

113 ms

js.js

231 ms

default

365 ms

Our browser made a total of 18 requests to load all elements on the main page. We found that 67% of them (12 requests) were addressed to the original E-zatepleni.cz, 11% (2 requests) were made to Google-analytics.com and 6% (1 request) were made to Embed.tawk.to. The less responsive or slowest element that took the longest time to load (415 ms) belongs to the original domain E-zatepleni.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 324.9 kB (70%)

Content Size

462.1 kB

After Optimization

137.2 kB

In fact, the total size of E-zatepleni.cz main page is 462.1 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. Only 10% of websites need less resources to load. Javascripts take 401.8 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 20.2 kB

  • Original 24.4 kB
  • After minification 23.0 kB
  • After compression 4.2 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 20.2 kB or 83% of the original size.

Image Optimization

-6%

Potential reduce by 1.4 kB

  • Original 23.5 kB
  • After minification 22.1 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. E Zatepleni images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 293.8 kB

  • Original 401.8 kB
  • After minification 401.8 kB
  • After compression 107.9 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 293.8 kB or 73% of the original size.

CSS Optimization

-77%

Potential reduce by 9.5 kB

  • Original 12.4 kB
  • After minification 11.6 kB
  • After compression 2.9 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. E-zatepleni.cz needs all CSS files to be minified and compressed as it can save up to 9.5 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (43%)

Requests Now

14

After Optimization

8

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of E Zatepleni. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Accessibility Review

e-zatepleni.cz accessibility score

78

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.

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

Best Practices

e-zatepleni.cz best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

e-zatepleni.cz SEO score

77

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    CS

  • Language Claimed

    CS

  • Encoding

    WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise E-zatepleni.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 E-zatepleni.cz main page’s claimed encoding is windows-1250. 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 E Zatepleni. 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: