Report Summary

  • 8

    Performance

    Renders faster than
    22% of other websites

  • 67

    Accessibility

    Visual factors better than
    that of 32% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

udrzba.cz

E-shop pro opravárenství, obrábění kovů, lepení kovů, údržbu, výrobu a ekologii

Page Load Speed

5.5 sec in total

First Response

1.1 sec

Resources Loaded

3.6 sec

Page Rendered

757 ms

udrzba.cz screenshot

About Website

Click here to check amazing Udrzba content. Otherwise, check out these important facts you probably never knew about udrzba.cz

Jsme firma s více než 15 - letou tradicí, se zaměřením na oblast průmyslu, průmyslové výroby, údržby, povrchových ochran, ekologie a kovoobrábění. Našimi zákazníky jsou provozy průmyslové údržby, prov...

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Key Findings

We analyzed Udrzba.cz page load time and found that the first response time was 1.1 sec and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

udrzba.cz performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value9.3 s

12/100

10%

TBT (Total Blocking Time)

Value2,920 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.444

21/100

15%

TTI (Time to Interactive)

Value12.9 s

13/100

10%

Network Requests Diagram

www.udrzba.cz

1136 ms

colorbox.css

228 ms

global.css

341 ms

theme.css

452 ms

custom.css

331 ms

Our browser made a total of 59 requests to load all elements on the main page. We found that 92% of them (54 requests) were addressed to the original Udrzba.cz, 2% (1 request) were made to Google.com and 2% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Udrzba.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 151.0 kB (3%)

Content Size

4.8 MB

After Optimization

4.7 MB

In fact, the total size of Udrzba.cz main page is 4.8 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 4.3 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 105.9 kB

  • Original 125.1 kB
  • After minification 111.7 kB
  • After compression 19.2 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. This page needs HTML code to be minified as it can gain 13.4 kB, which is 11% 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 105.9 kB or 85% of the original size.

Image Optimization

-1%

Potential reduce by 41.5 kB

  • Original 4.3 MB
  • After minification 4.3 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. Udrzba images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 2.7 kB

  • Original 337.1 kB
  • After minification 336.7 kB
  • After compression 334.4 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

-2%

Potential reduce by 936 B

  • Original 42.7 kB
  • After minification 42.7 kB
  • After compression 41.7 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. Udrzba.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 13 (24%)

Requests Now

55

After Optimization

42

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Udrzba. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

udrzba.cz accessibility score

67

Accessibility Issues

ARIA

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.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

ARIA input fields do not have accessible names

High

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

High

ARIA toggle fields do not have accessible names

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Tables and lists

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

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

udrzba.cz best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

udrzba.cz SEO score

83

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

Mobile Friendly

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/).

Impact

Issue

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Udrzba.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 Udrzba.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

Open Graph data is detected on the main page of Udrzba. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: