Access web4you.cz. Profesionální webové služby pro vaši online prezentaci

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

20/100

10%

LCP (Largest Contentful Paint)

Value9.8 s

0/100

25%

SI (Speed Index)

Value6.1 s

45/100

10%

TBT (Total Blocking Time)

Value310 ms

78/100

30%

CLS (Cumulative Layout Shift)

Value0.989

2/100

15%

TTI (Time to Interactive)

Value7.1 s

51/100

10%

web4you.cz

398 ms

www.web4u.cz

636 ms

main.css

107 ms

messages.css

205 ms

loginbox.css

289 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Web4you.cz, 79% (71 requests) were made to Web4u.cz and 6% (5 requests) were made to Helpdesk.web4u.cz. The less responsive or slowest element that took the longest time to load (881 ms) relates to the external source Helpdesk.web4u.cz.

Content Size

1.1 MB

After Optimization

681.5 kB

In fact, the total size of Web4you.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. 35% of websites need less resources to load. Images take 577.5 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 39.3 kB

Original 50.6 kB
After minification 45.6 kB
After compression 11.3 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 39.3 kB or 78% of the original size.

Image Optimization

-11%

Potential reduce by 63.9 kB

Original 577.5 kB
After minification 513.6 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, Web 4 You needs image optimization as it can save up to 63.9 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-64%

Potential reduce by 254.9 kB

Original 395.8 kB
After minification 386.1 kB
After compression 140.9 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 254.9 kB or 64% of the original size.

CSS Optimization

-87%

Potential reduce by 104.4 kB

Original 120.0 kB
After minification 93.0 kB
After compression 15.7 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. Web4you.cz needs all CSS files to be minified and compressed as it can save up to 104.4 kB or 87% of the original size.

Requests Now

After Optimization

The browser has sent 86 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Web 4 You. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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 Web4you.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 Web4you.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

web4you.cz

Open Graph description is not detected on the main page of Web 4 You. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

Profesionální webové služby pro vaši online prezentaci - Web4U

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

web4you.cz

www.web4u.cz

main.css

messages.css

loginbox.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

web4you.cz

www.web4u.cz

main.css

messages.css

loginbox.css

jquery-2.1.1.min.js

jquery.cookie.js

jquery.easing.1.3.js

hd-infoFloat.js

jquery-ui.min.js

loadingProcess.css

whois-whisperer.js

jquery.json.js

loading-process.js

loading-process-whois-whisperer-integration.js

fast-login-form.js

myriadpro-normal-webfont.woff

fastLogin_mojeID_icon.png

FENIX_CZ.png

KindredGroup.png

CCK.png

Kosmas.png

MUP.png

Zasilkovna.png

gtm.js

hp-header-bg.jpg

w4u-logo.png

search.png

login-form-submit.png

bullet-green.png

domain-check-bg.png

domain-check-input-bg.png

domain-check-submit-bg.png

certifikovany-registrator.png

hometabs-webhosting-label1.png

hometabs-webhosting-label2.png

false.png

true.png

domain-accordion-closed.png

bullet-yellow.png

hometab3_1.png

hometab3_2.png

hometab3_3.png