Tools & Wizards About Us
webrex.cz screenshot

Report Summary

  • 66

    Performance

    Renders faster than
    79% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

webrex.cz

Programujeme intranetový informační systém NAVICA (ERP) a aplikace na míru, eshopy, www stránky. WebRex s.r.o. více jak 20let s Vámi

Page Load Speed

2.1 sec in total

First Response

473 ms

Resources Loaded

1.4 sec

Page Rendered

198 ms

webrex.cz screenshot

About Website

Welcome to webrex.cz homepage info - get ready to check Web Rex best content right away, or after learning these important things about webrex.cz

Intranetový informační systém NAVICA (ERP), aplikace na míru, tvorba eshopů a www stránek, programování na zakázku, aplikace, poradenství, marketing. Kompletní servis pro Váš nový projekt.

Visit webrex.cz

Key Findings

We analyzed Webrex.cz page load time and found that the first response time was 473 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

webrex.cz performance score

66

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

79/100

10%

LCP (Largest Contentful Paint)

Value2.4 s

91/100

25%

SI (Speed Index)

Value3.2 s

92/100

10%

TBT (Total Blocking Time)

Value1,110 ms

23/100

30%

CLS (Cumulative Layout Shift)

Value0.029

100/100

15%

TTI (Time to Interactive)

Value7.5 s

47/100

10%

Network Requests Diagram

webrex.cz

473 ms

lightbox.css

108 ms

base.css

214 ms

template.css

320 ms

jquery.min.js

327 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 69% of them (20 requests) were addressed to the original Webrex.cz, 10% (3 requests) were made to Fonts.gstatic.com and 7% (2 requests) were made to Cdn.jsdelivr.net. The less responsive or slowest element that took the longest time to load (609 ms) relates to the external source Api.mapy.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 44.1 kB (9%)

Content Size

507.6 kB

After Optimization

463.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Webrex.cz main page is 507.6 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. 40% of websites need less resources to load. Javascripts take 302.1 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 27.9 kB

  • Original 37.2 kB
  • After minification 33.5 kB
  • After compression 9.3 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. 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 27.9 kB or 75% of the original size.

Image Optimization

-6%

Potential reduce by 8.9 kB

  • Original 148.8 kB
  • After minification 139.9 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. Web Rex images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 4.9 kB

  • Original 302.1 kB
  • After minification 302.1 kB
  • After compression 297.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-12%

Potential reduce by 2.4 kB

  • Original 19.5 kB
  • After minification 19.5 kB
  • After compression 17.1 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. Webrex.cz needs all CSS files to be minified and compressed as it can save up to 2.4 kB or 12% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (52%)

Requests Now

25

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Web Rex. 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.

Network Requests Diagram

webrex.cz

webrex.cz

473 ms

lightbox.css

lightbox.css

108 ms

base.css

base.css

214 ms

template.css

template.css

320 ms

jquery.min.js

jquery.min.js

327 ms

lightbox.js

lightbox.js

214 ms

api.js

api.js

65 ms

base.js

base.js

431 ms

loader.js

loader.js

609 ms

template.js

template.js

215 ms

cookieconsent.js

cookieconsent.js

38 ms

cookieconsent-init.js

cookieconsent-init.js

325 ms

js

js

79 ms

lazy-load.js

lazy-load.js

335 ms

recaptcha__en.js

recaptcha__en.js

24 ms

logo_red.png

logo_red.png

345 ms

envelope_red.png

envelope_red.png

138 ms

uvod.png

uvod.png

212 ms

blank-check-box.svg

blank-check-box.svg

136 ms

check-box.svg

check-box.svg

137 ms

logo_white.png

logo_white.png

137 ms

cookieconsent.css

cookieconsent.css

23 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Ew-.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Ew-.ttf

63 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM70w-.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM70w-.ttf

78 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr70w-.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr70w-.ttf

102 ms

prev.png

prev.png

151 ms

next.png

next.png

152 ms

loading.gif

loading.gif

151 ms

close.png

close.png

150 ms

Accessibility Review

webrex.cz accessibility score

93

Accessibility Issues

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

webrex.cz best practices score

75

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

webrex.cz SEO score

92

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

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 Webrex.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 Webrex.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

webrex.cz

Open Graph description is not detected on the main page of Web Rex. 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: