Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

o.invia.cz

O Invia | důležité informace o společnosti Invia.cz, a.s.

Page Load Speed

3.6 sec in total

First Response

219 ms

Resources Loaded

3 sec

Page Rendered

357 ms

o.invia.cz screenshot

About Website

Visit o.invia.cz now to see the best up-to-date O Invia content for Czech Republic and also check out these interesting facts you probably never knew about o.invia.cz

Všechny důležité informace o Invia na jednom místě. Zjistěte o společnosti Invia.cz, a.s. více. Máme bohatou historii s mnoha úspěchy.

Visit o.invia.cz

Key Findings

We analyzed O.invia.cz page load time and found that the first response time was 219 ms and then it took 3.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

o.invia.cz performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.4 s

6/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value5.9 s

48/100

10%

TBT (Total Blocking Time)

Value390 ms

68/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.3 s

50/100

10%

Network Requests Diagram

o.invia.cz

219 ms

o.invia.cz

470 ms

682 ms

gtm.js

97 ms

split-10.23.1.min.js

33 ms

Our browser made a total of 36 requests to load all elements on the main page. We found that 6% of them (2 requests) were addressed to the original O.invia.cz, 44% (16 requests) were made to Invia.cz and 22% (8 requests) were made to Scontent.inviacdn.net. The less responsive or slowest element that took the longest time to load (1.6 sec) relates to the external source Invia.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 107.9 kB (21%)

Content Size

518.5 kB

After Optimization

410.6 kB

In fact, the total size of O.invia.cz main page is 518.5 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. 30% of websites need less resources to load. Javascripts take 284.8 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 107.9 kB

  • Original 125.0 kB
  • After minification 104.5 kB
  • After compression 17.1 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 20.5 kB, which is 16% 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 107.9 kB or 86% of the original size.

JavaScript Optimization

-0%

Potential reduce by 21 B

  • Original 284.8 kB
  • After minification 284.8 kB
  • After compression 284.8 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 0 B

  • Original 108.7 kB
  • After minification 108.7 kB
  • After compression 108.7 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. O.invia.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 9 (30%)

Requests Now

30

After Optimization

21

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of O Invia. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

o.invia.cz accessibility score

98

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.

Best Practices

o.invia.cz best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

o.invia.cz SEO score

98

Search Engine Optimization Advices

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 O.invia.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 O.invia.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 description is not detected on the main page of O Invia. 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: