Access rosty.cz. Ro?ty do postele, kvalitn? matrace a postele od ?esk?ho v?robce.

rosty.cz screenshot

7

Performance

Renders faster than
22% of other websites
85

Accessibility

Visual factors better than
that of 58% of websites
58

Best Practices

More advanced features
available than in
20% of websites
83

SEO

Google-friendlier than
46% of websites

First Response

544 ms

Resources Loaded

3.5 sec

Page Rendered

792 ms

rosty.cz screenshot

About Website

Visit rosty.cz now to see the best up-to-date Ro S Ty content for Czech Republic and also check out these interesting facts you probably never knew about rosty.cz

Lamelov? ro?ty do postele m?me skladem, osobn? odb?r Praha. Zbo?? lze vyzkou?et a ihned koupit, ?esk? kvalitn? v?roba.

Visit rosty.cz

Key Findings

We analyzed Rosty.cz page load time and found that the first response time was 544 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

24/100

10%

LCP (Largest Contentful Paint)

Value7.7 s

3/100

25%

SI (Speed Index)

Value11.2 s

5/100

10%

TBT (Total Blocking Time)

Value2,580 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.739

6/100

15%

TTI (Time to Interactive)

Value13.4 s

11/100

10%

rosty.cz

544 ms

layout.css

640 ms

eshop.css

641 ms

jquery-1.9.0.min.js

849 ms

jquery.bxslider.min.js

644 ms

Our browser made a total of 149 requests to load all elements on the main page. We found that 85% of them (126 requests) were addressed to the original Rosty.cz, 6% (9 requests) were made to Apis.google.com and 1% (2 requests) were made to Im9.cz. The less responsive or slowest element that took the longest time to load (1.2 sec) relates to the external source Im9.cz.

Content Size

1.2 MB

After Optimization

740.0 kB

In fact, the total size of Rosty.cz main page is 1.2 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. 70% of websites need less resources to load. Images take 791.0 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 51.4 kB

Original 65.2 kB
After minification 61.2 kB
After compression 13.8 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 51.4 kB or 79% of the original size.

Image Optimization

-20%

Potential reduce by 161.0 kB

Original 791.0 kB
After minification 630.0 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, Ro S Ty needs image optimization as it can save up to 161.0 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-65%

Potential reduce by 163.5 kB

Original 250.7 kB
After minification 244.0 kB
After compression 87.2 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 163.5 kB or 65% of the original size.

CSS Optimization

-84%

Potential reduce by 47.6 kB

Original 56.6 kB
After minification 44.2 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. Rosty.cz needs all CSS files to be minified and compressed as it can save up to 47.6 kB or 84% of the original size.

Requests Now

145

After Optimization

81

The browser has sent 145 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ro S Ty. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 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 the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

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.

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

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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

High

Image elements do not have [alt] attributes

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

High

Tap targets are not sized appropriately

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 Rosty.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 Rosty.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

rosty.cz

Open Graph description is not detected on the main page of Ro S Ty. 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: