Report Summary

  • 89

    Performance

    Renders faster than
    90% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 0

    SEO

elweb.cz

elweb.cz : : elektronika na webu Martina Olej?ra ::.

Page Load Speed

2.6 sec in total

First Response

545 ms

Resources Loaded

1.5 sec

Page Rendered

546 ms

elweb.cz screenshot

About Website

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

:: elektronika na webu Martina Olej?ra :: elweb.cz :: N?vody, ?l?nky, konstrukce, sch?mata, zapojen?, diskuzn? f?rum, bazar, fotogalerie,...

Visit elweb.cz

Key Findings

We analyzed Elweb.cz page load time and found that the first response time was 545 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

elweb.cz performance score

89

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

86/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

79/100

25%

SI (Speed Index)

Value2.4 s

98/100

10%

TBT (Total Blocking Time)

Value210 ms

88/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.0 s

96/100

10%

Network Requests Diagram

elweb.cz

545 ms

style.css

546 ms

javascripty.js

544 ms

ga.js

18 ms

dpsaz.gif

113 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 85% of them (17 requests) were addressed to the original Elweb.cz, 10% (2 requests) were made to Google-analytics.com and 5% (1 request) were made to Toplist.cz. The less responsive or slowest element that took the longest time to load (546 ms) belongs to the original domain Elweb.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 22.5 kB (32%)

Content Size

70.6 kB

After Optimization

48.1 kB

In fact, the total size of Elweb.cz main page is 70.6 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. 15% of websites need less resources to load. HTML takes 27.2 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 19.6 kB

  • Original 27.2 kB
  • After minification 26.7 kB
  • After compression 7.7 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 19.6 kB or 72% of the original size.

Image Optimization

-0%

Potential reduce by 62 B

  • Original 22.5 kB
  • After minification 22.5 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. Elweb images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 102 B

  • Original 17.3 kB
  • After minification 17.3 kB
  • After compression 17.2 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

-78%

Potential reduce by 2.7 kB

  • Original 3.5 kB
  • After minification 2.5 kB
  • After compression 768 B

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. Elweb.cz needs all CSS files to be minified and compressed as it can save up to 2.7 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 5 (28%)

Requests Now

18

After Optimization

13

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Elweb. 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

elweb.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

elweb.cz best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

elweb.cz SEO score

0

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1250

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Elweb.cz can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Elweb.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 Elweb. 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: