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t-systems.cz screenshot

Report Summary

  • 3

    Performance

    Renders faster than
    20% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

t-systems.cz

Spolehlivý operátor pro mobilní i pevné služby - T-Mobile.cz

Page Load Speed

6.8 sec in total

First Response

320 ms

Resources Loaded

5.8 sec

Page Rendered

671 ms

t-systems.cz screenshot

About Website

Welcome to t-systems.cz homepage info - get ready to check T Systems best content for Czech Republic right away, or after learning these important things about t-systems.cz

U nás pořídíte tarifní řešení pro celou domácnost - neomezené volání, mobilní data, domácí internet i digitální TV. Výhodně v Magentě 1.

Visit t-systems.cz

Key Findings

We analyzed T-systems.cz page load time and found that the first response time was 320 ms and then it took 6.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

t-systems.cz performance score

3

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.6 s

2/100

10%

LCP (Largest Contentful Paint)

Value17.6 s

0/100

25%

SI (Speed Index)

Value11.5 s

5/100

10%

TBT (Total Blocking Time)

Value2,280 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value2.56

0/100

15%

TTI (Time to Interactive)

Value18.3 s

3/100

10%

Network Requests Diagram

osobni

320 ms

critical.css

613 ms

jquery-1.11.2.js

866 ms

libs.js

1216 ms

barebone.jsp

1463 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original T-systems.cz, 42% (25 requests) were made to T-mobile.cz and 2% (1 request) were made to Cdn.t-mobile.cz. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Static2.t-mobile.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 188.0 kB (13%)

Content Size

1.4 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of T-systems.cz main page is 1.4 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. 65% of websites need less resources to load. Images take 997.7 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 104.4 kB

  • Original 130.4 kB
  • After minification 113.3 kB
  • After compression 26.0 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 17.1 kB, which is 13% 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 104.4 kB or 80% of the original size.

Image Optimization

-6%

Potential reduce by 55.3 kB

  • Original 997.7 kB
  • After minification 942.4 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. T Systems images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 6.0 kB

  • Original 158.2 kB
  • After minification 158.2 kB
  • After compression 152.2 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

-15%

Potential reduce by 22.2 kB

  • Original 145.9 kB
  • After minification 145.8 kB
  • After compression 123.7 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. T-systems.cz needs all CSS files to be minified and compressed as it can save up to 22.2 kB or 15% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (66%)

Requests Now

59

After Optimization

20

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 59 CSS, Javascripts, AJAX and image requests in order to completely render the main page of T Systems. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

osobni

osobni

320 ms

critical.css

critical.css

613 ms

jquery-1.11.2.js

jquery-1.11.2.js

866 ms

libs.js

libs.js

1216 ms

barebone.jsp

barebone.jsp

1463 ms

lead-api.min.js

lead-api.min.js

711 ms

vue-axios.min.js

vue-axios.min.js

835 ms

polyfill-functions.js

polyfill-functions.js

978 ms

ajaxUI.js

ajaxUI.js

979 ms

main.js

main.js

980 ms

navigation.js

navigation.js

992 ms

custom-child.css

custom-child.css

1107 ms

exponea-loader.js

exponea-loader.js

233 ms

lcp-style.css

lcp-style.css

279 ms

lcp-script.js

lcp-script.js

281 ms

lcp-float-style.css

lcp-float-style.css

360 ms

lcp-float-script.js

lcp-float-script.js

368 ms

portletStore.js

portletStore.js

1018 ms

minicart.js

minicart.js

1010 ms

ext.js

ext.js

1019 ms

main.js

main.js

1149 ms

main.js

main.js

1148 ms

main.js

main.js

1150 ms

upload.js

upload.js

1149 ms

main.js

main.js

1250 ms

gtm.js

gtm.js

194 ms

ico-junior.svg

ico-junior.svg

134 ms

apple-logo.svg

apple-logo.svg

133 ms

Samsung-Galaxy-A13-32GB-(A135F)-bily-listing.jpg

Samsung-Galaxy-A13-32GB-(A135F)-bily-listing.jpg

280 ms

Realme-9i-cerny-listing.jpg

Realme-9i-cerny-listing.jpg

279 ms

TCL-306-modry-listing.jpg

TCL-306-modry-listing.jpg

280 ms

Oppo-Reno5-Z-cerny-listing.jpg

Oppo-Reno5-Z-cerny-listing.jpg

279 ms

iPhone-13-mini-green-listing.jpg

iPhone-13-mini-green-listing.jpg

281 ms

TMO_box_neco_se_chysta_soutez-380x190.jpg

TMO_box_neco_se_chysta_soutez-380x190.jpg

622 ms

box-PremierLeague-380x190.jpg

box-PremierLeague-380x190.jpg

418 ms

box-student-srpen22-380x190.jpg

box-student-srpen22-380x190.jpg

515 ms

aui.css

aui.css

157 ms

hero-banner-akvizicni-tarif-srpen22-2500x480.jpg

hero-banner-akvizicni-tarif-srpen22-2500x480.jpg

644 ms

HERO-tarif_junior-2500x480.jpg

HERO-tarif_junior-2500x480.jpg

634 ms

hero-banner-samsung-a13-2500x480.jpg

hero-banner-samsung-a13-2500x480.jpg

579 ms

hero-banner-optika-srpen-2500x480.jpg

hero-banner-optika-srpen-2500x480.jpg

976 ms

hero-banner-tmtv-cervenec-22-2500x480.jpg

hero-banner-tmtv-cervenec-22-2500x480.jpg

930 ms

podval-2500x580.jpg

podval-2500x580.jpg

1042 ms

loadNumberOfItems

loadNumberOfItems

698 ms

176 ms

osobni

osobni

722 ms

main.css

main.css

140 ms

132 ms

available_languages.jsp

available_languages.jsp

348 ms

130 ms

vue.css

vue.css

160 ms

main.css

main.css

150 ms

ext.css

ext.css

132 ms

main.css

main.css

135 ms

main.css

main.css

131 ms

main.css

main.css

132 ms

main.css

main.css

131 ms

main.css

main.css

136 ms

main.css

main.css

131 ms

custom.css

custom.css

247 ms

Accessibility Review

t-systems.cz accessibility score

69

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-*] attributes do not have valid values

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

<frame> or <iframe> elements do not have a title

High

Form elements do not have associated labels

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

t-systems.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

t-systems.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

    CS

  • Encoding

    UTF-8

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

t-systems.cz

Open Graph description is not detected on the main page of T Systems. 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: