Tools & Wizards About Us
ranka.cz screenshot

Report Summary

  • 88

    Performance

    Renders faster than
    90% of other websites

  • 39

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

ranka.cz

Semináře, přednášky, knihy, CD, karty - Ranka Tučková - Ranka.cz

Page Load Speed

2.7 sec in total

First Response

425 ms

Resources Loaded

2 sec

Page Rendered

194 ms

ranka.cz screenshot

About Website

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

Vítejte na stránkách Ranky Tučkové. Podívejte se na její tvorbu nebo se přijďte osobně podívat na některou z přednášek či seminářů.

Visit ranka.cz

Key Findings

We analyzed Ranka.cz page load time and found that the first response time was 425 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

ranka.cz performance score

88

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

88/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

98/100

25%

SI (Speed Index)

Value3.5 s

88/100

10%

TBT (Total Blocking Time)

Value310 ms

78/100

30%

CLS (Cumulative Layout Shift)

Value0.03

100/100

15%

TTI (Time to Interactive)

Value5.5 s

71/100

10%

Network Requests Diagram

ranka.cz

425 ms

ranka.cz

472 ms

main.css

107 ms

list.css

213 ms

slide.js

308 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 72% of them (36 requests) were addressed to the original Ranka.cz, 18% (9 requests) were made to Static.xx.fbcdn.net and 4% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (836 ms) belongs to the original domain Ranka.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 30.4 kB (5%)

Content Size

585.2 kB

After Optimization

554.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ranka.cz main page is 585.2 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. 35% of websites need less resources to load. Images take 531.3 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 14.2 kB

  • Original 18.3 kB
  • After minification 13.5 kB
  • After compression 4.1 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 4.8 kB, which is 26% 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 14.2 kB or 78% of the original size.

Image Optimization

-1%

Potential reduce by 6.0 kB

  • Original 531.3 kB
  • After minification 525.2 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. Ranka images are well optimized though.

JavaScript Optimization

-31%

Potential reduce by 9.0 kB

  • Original 28.8 kB
  • After minification 25.5 kB
  • After compression 19.8 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 9.0 kB or 31% of the original size.

CSS Optimization

-17%

Potential reduce by 1.2 kB

  • Original 6.8 kB
  • After minification 6.8 kB
  • After compression 5.6 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. Ranka.cz needs all CSS files to be minified and compressed as it can save up to 1.2 kB or 17% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (19%)

Requests Now

48

After Optimization

39

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ranka. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

ranka.cz

ranka.cz

425 ms

ranka.cz

ranka.cz

472 ms

main.css

main.css

107 ms

list.css

list.css

213 ms

slide.js

slide.js

308 ms

uni.js

uni.js

312 ms

back.jpg

back.jpg

106 ms

jin_jang.gif

jin_jang.gif

104 ms

back_obs.jpg

back_obs.jpg

107 ms

back_logo2.jpg

back_logo2.jpg

238 ms

face3.png

face3.png

238 ms

cara1px.jpg

cara1px.jpg

238 ms

hledej.png

hledej.png

238 ms

milenky_sperky_logo.jpg

milenky_sperky_logo.jpg

836 ms

kniha.jpg

kniha.jpg

345 ms

3vydani.png

3vydani.png

552 ms

kniha2.jpg

kniha2.jpg

345 ms

kniha3.jpg

kniha3.jpg

346 ms

kniha4.jpg

kniha4.jpg

345 ms

karty3.jpg

karty3.jpg

451 ms

cd1.jpg

cd1.jpg

452 ms

cd6.jpg

cd6.jpg

452 ms

cd2.jpg

cd2.jpg

453 ms

cd3.jpg

cd3.jpg

558 ms

banner-barva.jpg

banner-barva.jpg

559 ms

banner-karta.jpg

banner-karta.jpg

558 ms

tlac-seminare.jpg

tlac-seminare.jpg

561 ms

tlac-kalendar.jpg

tlac-kalendar.jpg

659 ms

3204.jpg

3204.jpg

665 ms

1341.jpg

1341.jpg

664 ms

3674.jpg

3674.jpg

665 ms

2004.jpg

2004.jpg

668 ms

likebox.php

likebox.php

98 ms

kos_back1.jpg

kos_back1.jpg

744 ms

kosik.png

kosik.png

748 ms

back_obsah2.jpg

back_obsah2.jpg

733 ms

back75b.png

back75b.png

737 ms

ga.js

ga.js

20 ms

__utm.gif

__utm.gif

12 ms

r7XLVrJG0YD.css

r7XLVrJG0YD.css

17 ms

CQhgXWAVmE8.js

CQhgXWAVmE8.js

28 ms

o1ndYS2og_B.js

o1ndYS2og_B.js

25 ms

guwKwycnxkZ.js

guwKwycnxkZ.js

61 ms

J8JpUDMoOct.js

J8JpUDMoOct.js

60 ms

nUsQsbLYGaD.js

nUsQsbLYGaD.js

59 ms

p55HfXW__mM.js

p55HfXW__mM.js

59 ms

294358191_737575084170442_7628660269419531837_n.jpg

294358191_737575084170442_7628660269419531837_n.jpg

249 ms

295302036_737575080837109_7242988226228486876_n.jpg

295302036_737575080837109_7242988226228486876_n.jpg

105 ms

VuRstRCPjmu.png

VuRstRCPjmu.png

18 ms

Mi1gjOVt03e.js

Mi1gjOVt03e.js

4 ms

Accessibility Review

ranka.cz accessibility score

39

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.

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

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

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

ranka.cz best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

ranka.cz SEO score

69

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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 Ranka.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 Ranka.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

ranka.cz

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