Access cemex.cz. Výrobce a dodavatel stavebních materiálů

name

value

score

weighting

FCP (First Contentful Paint)

Value7.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value13.2 s

0/100

25%

SI (Speed Index)

Value12.9 s

2/100

10%

TBT (Total Blocking Time)

Value5,960 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.01

100/100

15%

TTI (Time to Interactive)

Value30.1 s

0/100

10%

cemex.cz

157 ms

www.cemex.cz

809 ms

font-awesome.min.css

299 ms

enquire.min.js

303 ms

mentions.css

455 ms

Our browser made a total of 109 requests to load all elements on the main page. We found that 68% of them (74 requests) were addressed to the original Cemex.cz, 11% (12 requests) were made to Cdn-web.cemex.com and 4% (4 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (2.3 sec) relates to the external source Cdn-web.cemex.com.

Content Size

5.1 MB

After Optimization

4.8 MB

In fact, the total size of Cemex.cz main page is 5.1 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. Only a small number of websites need less resources to load. Images take 4.8 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 223.2 kB

Original 257.5 kB
After minification 206.4 kB
After compression 34.3 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. This page needs HTML code to be minified as it can gain 51.1 kB, which is 20% 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 223.2 kB or 87% of the original size.

Image Optimization

-1%

Potential reduce by 55.6 kB

Original 4.8 MB
After minification 4.7 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. CEMEX images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 158 B

Original 50.2 kB
After minification 50.2 kB
After compression 50.1 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

-0%

Potential reduce by 0 B

Original 8.9 kB
After minification 8.9 kB
After compression 8.9 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. Cemex.cz has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 94 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CEMEX. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 17 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[role]s are not contained by their required parent element

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

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

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

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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/).

High

Document uses legible font sizes

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 Cemex.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 Cemex.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

cemex.cz

Open Graph description is not detected on the main page of CEMEX. 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

Výrobce a dodavatel stavebních materiálů | CEMEX CZ

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

cemex.cz

www.cemex.cz

font-awesome.min.css

enquire.min.js

mentions.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

cemex.cz

www.cemex.cz

font-awesome.min.css

enquire.min.js

mentions.css

main.css

aui.css

main.css

combo

js_loader_modules

everything.jsp

js_bundle_config

main.css

combo

combo

datatype-CZ.js

owl.carousel.min.css

owl.theme.min.css

owl.carousel.min.js

magnific-popup.css

main.js

home.css

all.css

all-cemex-scripts.min.js

main.js

gtm.js

layout_set_logo

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