Tools & Wizards About Us
optifor.cz screenshot

Report Summary

  • 64

    Performance

    Renders faster than
    77% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

optifor.cz

Oznámení o spojení firem OPTIFOR a VIZUS | VIZUS.CZ

Page Load Speed

28 sec in total

First Response

11.7 sec

Resources Loaded

16.1 sec

Page Rendered

144 ms

optifor.cz screenshot

About Website

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

Ke dni 1. 8. 2012 se firmy OPTIFOR a VIZUS domluvily na vzájemném propojení a posílení.

Visit optifor.cz

Key Findings

We analyzed Optifor.cz page load time and found that the first response time was 11.7 sec and then it took 16.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

optifor.cz performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

35/100

25%

SI (Speed Index)

Value9.4 s

12/100

10%

TBT (Total Blocking Time)

Value110 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.7 s

80/100

10%

Network Requests Diagram

optifor.cz

11728 ms

www.optifor.cz

579 ms

775 ms

493786-20240526-180001.js

2257 ms

web-bdabcbe0052470fd6bf987028ad5de79.js

286 ms

Our browser made a total of 20 requests to load all elements on the main page. We found that 10% of them (2 requests) were addressed to the original Optifor.cz, 50% (10 requests) were made to Vizus.cz and 10% (2 requests) were made to Matomo.vizus.cz. The less responsive or slowest element that took the longest time to load (11.7 sec) belongs to the original domain Optifor.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 63.7 kB (16%)

Content Size

396.6 kB

After Optimization

332.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Optifor.cz main page is 396.6 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. 15% of websites need less resources to load. Javascripts take 166.4 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 61.8 kB

  • Original 80.7 kB
  • After minification 78.5 kB
  • After compression 18.9 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 61.8 kB or 77% of the original size.

Image Optimization

-5%

Potential reduce by 1.7 kB

  • Original 30.9 kB
  • After minification 29.2 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. OPTIFOR images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 162 B

  • Original 166.4 kB
  • After minification 166.4 kB
  • After compression 166.3 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 38 B

  • Original 118.6 kB
  • After minification 118.6 kB
  • After compression 118.5 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. Optifor.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 6 (35%)

Requests Now

17

After Optimization

11

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of OPTIFOR. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

optifor.cz

optifor.cz

11728 ms

www.optifor.cz

www.optifor.cz

579 ms

775 ms

493786-20240526-180001.js

493786-20240526-180001.js

2257 ms

web-bdabcbe0052470fd6bf987028ad5de79.js

web-bdabcbe0052470fd6bf987028ad5de79.js

286 ms

addthis_widget.js

addthis_widget.js

47 ms

matomo.js

matomo.js

658 ms

gtm.js

gtm.js

73 ms

vizus-logo.png

vizus-logo.png

104 ms

001665_61_017469.jpg

001665_61_017469.jpg

275 ms

001684_02_017654.png

001684_02_017654.png

327 ms

001199_03_005051.png

001199_03_005051.png

329 ms

google-partner.png

google-partner.png

332 ms

www.paraple.cz.ico

www.paraple.cz.ico

307 ms

js

js

67 ms

analytics.js

analytics.js

20 ms

collect

collect

14 ms

web-0073a375c9732d0f95528101d64c601c.css

web-0073a375c9732d0f95528101d64c601c.css

278 ms

print-d4dfef522f6e4b88e038c90f838e4449.css

print-d4dfef522f6e4b88e038c90f838e4449.css

93 ms

matomo.php

matomo.php

222 ms

Accessibility Review

optifor.cz accessibility score

91

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

Best Practices

optifor.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

optifor.cz SEO score

91

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Optifor.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 Optifor.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

optifor.cz

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