Tools & Wizards About Us
kna.cz screenshot

Report Summary

  • 64

    Performance

    Renders faster than
    78% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 69

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

kna.cz

Karmelitánské nakladatelství a online knihkupectví

Page Load Speed

3 sec in total

First Response

329 ms

Resources Loaded

2.3 sec

Page Rendered

400 ms

kna.cz screenshot

About Website

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

Karmelitánské nakladatelství (KNA) bylo založeno v roce 1990 a stalo se lídrem na trhu s křesťanskou a katolickou knižní produkcí. Od roku 2019 je vlastníkem KNA Česká biskupská konference.

Visit kna.cz

Key Findings

We analyzed Kna.cz page load time and found that the first response time was 329 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

kna.cz performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

22/100

10%

LCP (Largest Contentful Paint)

Value5.2 s

24/100

25%

SI (Speed Index)

Value5.8 s

50/100

10%

TBT (Total Blocking Time)

Value170 ms

93/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value5.1 s

75/100

10%

Network Requests Diagram

kna.cz

329 ms

www.kna.cz

617 ms

classes.css

110 ms

default.css

215 ms

balicek.css

214 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 77% of them (46 requests) were addressed to the original Kna.cz, 17% (10 requests) were made to Ikarmel.cz and 3% (2 requests) were made to C1.navrcholu.cz. The less responsive or slowest element that took the longest time to load (647 ms) relates to the external source Ikarmel.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 164.9 kB (39%)

Content Size

427.7 kB

After Optimization

262.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kna.cz main page is 427.7 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. Images take 216.8 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 31.6 kB

  • Original 40.9 kB
  • After minification 39.6 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 31.6 kB or 77% of the original size.

Image Optimization

-5%

Potential reduce by 11.2 kB

  • Original 216.8 kB
  • After minification 205.6 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. Kna images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 96.3 kB

  • Original 137.2 kB
  • After minification 117.6 kB
  • After compression 40.9 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 96.3 kB or 70% of the original size.

CSS Optimization

-78%

Potential reduce by 25.8 kB

  • Original 32.8 kB
  • After minification 26.6 kB
  • After compression 7.1 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. Kna.cz needs all CSS files to be minified and compressed as it can save up to 25.8 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (38%)

Requests Now

58

After Optimization

36

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kna. 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 from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

kna.cz

kna.cz

329 ms

www.kna.cz

www.kna.cz

617 ms

classes.css

classes.css

110 ms

default.css

default.css

215 ms

balicek.css

balicek.css

214 ms

highslide.css

highslide.css

219 ms

get.object.js

get.object.js

220 ms

function.js

function.js

220 ms

number.control.js

number.control.js

227 ms

value.control.js

value.control.js

318 ms

ajax.js

ajax.js

318 ms

ankety.js

ankety.js

321 ms

antispambot.js

antispambot.js

323 ms

highslide-with-gallery.js

highslide-with-gallery.js

439 ms

code

code

329 ms

10647.jpg

10647.jpg

313 ms

101238.jpg

101238.jpg

529 ms

101875.jpg

101875.jpg

526 ms

10787.jpg

10787.jpg

528 ms

101981.jpg

101981.jpg

527 ms

101991.jpg

101991.jpg

635 ms

101988.jpg

101988.jpg

647 ms

101939.jpg

101939.jpg

618 ms

najdete-nas-na-facebooku.gif

najdete-nas-na-facebooku.gif

631 ms

101531.jpg

101531.jpg

313 ms

top.jpg

top.jpg

431 ms

logo.jpg

logo.jpg

212 ms

017749200145821601726.jpg

017749200145821601726.jpg

109 ms

cara.gif

cara.gif

108 ms

049065100145813271927.jpg

049065100145813271927.jpg

111 ms

044777800136325764176.jpg

044777800136325764176.jpg

113 ms

055035200144932978129.jpg

055035200144932978129.jpg

214 ms

061575900145719052945.jpg

061575900145719052945.jpg

214 ms

097199900136215321547.jpg

097199900136215321547.jpg

218 ms

033642700129897333719.jpg

033642700129897333719.jpg

220 ms

060364900132914046751.jpg

060364900132914046751.jpg

320 ms

vice.gif

vice.gif

320 ms

m.gif

m.gif

321 ms

youcat-banner-2-maly-pokus.jpg

youcat-banner-2-maly-pokus.jpg

323 ms

svati-na-kazdy-den-2.gif

svati-na-kazdy-den-2.gif

325 ms

jeruzalemska-bible.gif

jeruzalemska-bible.gif

426 ms

communio-banner-maly.jpg

communio-banner-maly.jpg

424 ms

BN-velci-teologove.jpg

BN-velci-teologove.jpg

426 ms

banner-ikarmel.cz-2.gif

banner-ikarmel.cz-2.gif

430 ms

banner-iencyklopedie.cz-2.gif

banner-iencyklopedie.cz-2.gif

435 ms

banner-katechismus.cz-2.gif

banner-katechismus.cz-2.gif

530 ms

lupa.jpg

lupa.jpg

530 ms

sea.gif

sea.gif

533 ms

nav2.gif

nav2.gif

532 ms

nav.gif

nav.gif

534 ms

nav4.gif

nav4.gif

539 ms

topnav.gif

topnav.gif

634 ms

RSS.png

RSS.png

635 ms

hit

hit

237 ms

analytics.js

analytics.js

5 ms

collect

collect

13 ms

print.css

print.css

110 ms

drop-shadow.png

drop-shadow.png

110 ms

zoomout.cur

zoomout.cur

108 ms

loader.white.gif

loader.white.gif

108 ms

Accessibility Review

kna.cz accessibility score

61

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

kna.cz best practices score

69

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

kna.cz SEO score

67

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

    CS

  • Encoding

    UTF-8

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

kna.cz

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