Tools & Wizards About Us
kalkulator.tzb-info.cz screenshot

Report Summary

  • 51

    Performance

    Renders faster than
    69% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

kalkulator.tzb-info.cz

Nezávislé porovnání cen elektřiny a plynu | Ceny 2024

Page Load Speed

3.1 sec in total

First Response

318 ms

Resources Loaded

2.4 sec

Page Rendered

409 ms

kalkulator.tzb-info.cz screenshot

About Website

Welcome to kalkulator.tzb-info.cz homepage info - get ready to check Kalkulator Tzb Info best content for Czech Republic right away, or after learning these important things about kalkulator.tzb-info.cz

Vyberte si nejvýhodnějšího dodavatele elektřiny a plynu. Máme aktuální ceníky více než 50 dodavatelů a pomůžeme Vám srovnat všechny dodavatele a vybrat nejlevnějšího se kterým ušetříte. Máme pro Vás s...

Visit kalkulator.tzb-info.cz

Key Findings

We analyzed Kalkulator.tzb-info.cz page load time and found that the first response time was 318 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

kalkulator.tzb-info.cz performance score

51

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

17/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

32/100

25%

SI (Speed Index)

Value6.4 s

40/100

10%

TBT (Total Blocking Time)

Value390 ms

69/100

30%

CLS (Cumulative Layout Shift)

Value0.026

100/100

15%

TTI (Time to Interactive)

Value11.2 s

20/100

10%

Network Requests Diagram

kalkulator.tzb-info.cz

318 ms

kalkulator.tzb-info.cz

632 ms

jquery-ui-1.9.1.custom.css

95 ms

jquery.fancybox.min.css

190 ms

fonts.googleapis.com

37 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 73% of them (48 requests) were addressed to the original Kalkulator.tzb-info.cz, 15% (10 requests) were made to Fonts.gstatic.com and 5% (3 requests) were made to Tzb-info.cz. The less responsive or slowest element that took the longest time to load (802 ms) relates to the external source Tzb-info.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 51.1 kB (12%)

Content Size

425.5 kB

After Optimization

374.4 kB

  • HTML
  • Images

In fact, the total size of Kalkulator.tzb-info.cz main page is 425.5 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. 65% of websites need less resources to load. Images take 395.8 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 22.1 kB

  • Original 29.7 kB
  • After minification 27.2 kB
  • After compression 7.6 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 22.1 kB or 74% of the original size.

Image Optimization

-7%

Potential reduce by 29.1 kB

  • Original 395.8 kB
  • After minification 366.7 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. Kalkulator Tzb Info images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 17 (33%)

Requests Now

51

After Optimization

34

  • Images
  • JavaScript
  • CSS

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kalkulator Tzb Info. 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 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

kalkulator.tzb-info.cz

kalkulator.tzb-info.cz

318 ms

kalkulator.tzb-info.cz

kalkulator.tzb-info.cz

632 ms

jquery-ui-1.9.1.custom.css

jquery-ui-1.9.1.custom.css

95 ms

jquery.fancybox.min.css

jquery.fancybox.min.css

190 ms

fonts.googleapis.com

fonts.googleapis.com

37 ms

fonts.gstatic.com

fonts.gstatic.com

27 ms

css2

css2

53 ms

choices.min.css

choices.min.css

283 ms

style.min.css

style.min.css

286 ms

jquery-1.12.4.min.js

jquery-1.12.4.min.js

400 ms

jquery-migrate-1.4.1.min.js

jquery-migrate-1.4.1.min.js

284 ms

jquery-ui-1.9.1.custom.min.js

jquery-ui-1.9.1.custom.min.js

489 ms

jquery.ui.datepicker-cs.js

jquery.ui.datepicker-cs.js

294 ms

main.min.js

main.min.js

375 ms

jquery.fancybox.min.js

jquery.fancybox.min.js

473 ms

project.js

project.js

379 ms

popper.min.js

popper.min.js

382 ms

tippy.min.js

tippy.min.js

469 ms

choices.min.js

choices.min.js

475 ms

fslightbox.js

fslightbox.js

476 ms

main.js

main.js

491 ms

choices.min.css

choices.min.css

280 ms

gtm.js

gtm.js

78 ms

menu.svg

menu.svg

95 ms

027129on.jpg

027129on.jpg

696 ms

logo.svg

logo.svg

179 ms

logo-tzbinfo.svg

logo-tzbinfo.svg

102 ms

electricity.svg

electricity.svg

176 ms

gas.svg

gas.svg

101 ms

user.svg

user.svg

103 ms

help.svg

help.svg

209 ms

caret-right-blue.svg

caret-right-blue.svg

213 ms

check-green.svg

check-green.svg

214 ms

mdi.jpg

mdi.jpg

213 ms

gazela.png

gazela.png

215 ms

solidsun.png

solidsun.png

213 ms

cesketeplo.png

cesketeplo.png

272 ms

avis.png

avis.png

303 ms

vemex.png

vemex.png

307 ms

efg.png

efg.png

309 ms

logo_eneka.png

logo_eneka.png

303 ms

centropol.png

centropol.png

301 ms

logo_st_energy.png

logo_st_energy.png

364 ms

inenergie.png

inenergie.png

402 ms

ctz.png

ctz.png

406 ms

freepower.png

freepower.png

402 ms

uced.png

uced.png

406 ms

caret-right-orange.svg

caret-right-orange.svg

406 ms

arrow-right.svg

arrow-right.svg

458 ms

tzbinfo-logo.svg

tzbinfo-logo.svg

495 ms

estav-tv-logo.svg

estav-tv-logo.svg

497 ms

estav-logo.svg

estav-logo.svg

500 ms

tzbinfo-df-logo.svg

tzbinfo-df-logo.svg

501 ms

027099on.jpg

027099on.jpg

688 ms

027054on.jpg

027054on.jpg

802 ms

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuLyfMZs.woff

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuLyfMZs.woff

17 ms

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuI6fMZs.woff

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuI6fMZs.woff

28 ms

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuOKfMZs.woff

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuOKfMZs.woff

29 ms

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuDyfMZs.woff

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuDyfMZs.woff

31 ms

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuLyeMZs.woff

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuLyeMZs.woff

30 ms

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuGKYMZs.woff

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuGKYMZs.woff

31 ms

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuFuYMZs.woff

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuFuYMZs.woff

29 ms

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuDyYMZs.woff

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuDyYMZs.woff

104 ms

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuBWYMZs.woff

UcCO3FwrK3iLTeHuS_fvQtMwCp50KnMw2boKoduKmMEVuBWYMZs.woff

105 ms

swfobject.js

swfobject.js

21 ms

myx.js

myx.js

21 ms

Accessibility Review

kalkulator.tzb-info.cz accessibility score

70

Accessibility Issues

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

Buttons do not have an accessible name

High

Form elements do not have associated labels

High

Links do not have a discernible name

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

kalkulator.tzb-info.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

High

Page has valid source maps

SEO Factors

kalkulator.tzb-info.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 Kalkulator.tzb-info.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 Kalkulator.tzb-info.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

kalkulator.tzb-info.cz

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