Tools & Wizards About Us

Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 55

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

univent.cz

Ventil?tory, rekuperace, ventilace - UNIVENT s r.o.

Page Load Speed

2.6 sec in total

First Response

332 ms

Resources Loaded

2.1 sec

Page Rendered

147 ms

About Website

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

UNIVENT CZ spol. s r.o.

Visit univent.cz

Key Findings

We analyzed Univent.cz page load time and found that the first response time was 332 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

univent.cz performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

24/100

10%

LCP (Largest Contentful Paint)

Value8.1 s

2/100

25%

SI (Speed Index)

Value5.8 s

49/100

10%

TBT (Total Blocking Time)

Value510 ms

57/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.2 s

51/100

10%

Network Requests Diagram

univent.cz

332 ms

www.univent.cz

583 ms

style.css

119 ms

web_tpl1.js

223 ms

dropdown.css

226 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 95% of them (40 requests) were addressed to the original Univent.cz, 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (583 ms) belongs to the original domain Univent.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 194.0 kB (58%)

Content Size

332.5 kB

After Optimization

138.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Univent.cz main page is 332.5 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. 20% of websites need less resources to load. Javascripts take 217.9 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 17.6 kB

  • Original 23.5 kB
  • After minification 22.6 kB
  • After compression 5.9 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 17.6 kB or 75% of the original size.

Image Optimization

-10%

Potential reduce by 6.2 kB

  • Original 61.2 kB
  • After minification 55.0 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. UNIVENT images are well optimized though.

JavaScript Optimization

-67%

Potential reduce by 145.6 kB

  • Original 217.9 kB
  • After minification 177.7 kB
  • After compression 72.2 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 145.6 kB or 67% of the original size.

CSS Optimization

-82%

Potential reduce by 24.6 kB

  • Original 30.0 kB
  • After minification 23.0 kB
  • After compression 5.4 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. Univent.cz needs all CSS files to be minified and compressed as it can save up to 24.6 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (60%)

Requests Now

40

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of UNIVENT. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

univent.cz accessibility score

55

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

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

univent.cz best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

univent.cz SEO score

69

Search Engine Optimization Advices

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

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 Univent.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 Univent.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 UNIVENT. 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: