Tools & Wizards About Us
databook.cz screenshot

Report Summary

  • 56

    Performance

    Renders faster than
    72% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 87

    SEO

    Google-friendlier than
    65% of websites

databook.cz

E-knihy v PDF, ePub, mobi | elektronické knihy Databook

Page Load Speed

2.8 sec in total

First Response

398 ms

Resources Loaded

2.2 sec

Page Rendered

296 ms

databook.cz screenshot

About Website

Click here to check amazing Databook content for Czech Republic. Otherwise, check out these important facts you probably never knew about databook.cz

Elektronické knihy Databook.cz e-knihy ve formátu PDF, ePub a mobi do čtečky, počítače i tabletu. Všechny ke čtení už za pár minut. Parádní ebooky za super ceny!

Visit databook.cz

Key Findings

We analyzed Databook.cz page load time and found that the first response time was 398 ms and then it took 2.5 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

databook.cz performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value6.8 s

34/100

10%

TBT (Total Blocking Time)

Value90 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.0 s

42/100

10%

Network Requests Diagram

databook.cz

398 ms

www.databook.cz

670 ms

rur.css

199 ms

styl.css

285 ms

pi.css

286 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 85% of them (53 requests) were addressed to the original Databook.cz, 3% (2 requests) were made to Ssl.google-analytics.com and 3% (2 requests) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (670 ms) belongs to the original domain Databook.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 100.5 kB (16%)

Content Size

610.5 kB

After Optimization

509.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Databook.cz main page is 610.5 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. 35% of websites need less resources to load. Images take 298.7 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 68.6 kB

  • Original 85.6 kB
  • After minification 71.4 kB
  • After compression 16.9 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 14.1 kB, which is 17% 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 68.6 kB or 80% of the original size.

Image Optimization

-5%

Potential reduce by 14.7 kB

  • Original 298.7 kB
  • After minification 284.0 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. Databook images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 9.9 kB

  • Original 199.9 kB
  • After minification 199.3 kB
  • After compression 190.0 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

-28%

Potential reduce by 7.3 kB

  • Original 26.3 kB
  • After minification 26.3 kB
  • After compression 19.0 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. Databook.cz needs all CSS files to be minified and compressed as it can save up to 7.3 kB or 28% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (56%)

Requests Now

57

After Optimization

25

  • Images
  • JavaScript
  • CSS

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Databook. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

databook.cz

databook.cz

398 ms

www.databook.cz

www.databook.cz

670 ms

rur.css

rur.css

199 ms

styl.css

styl.css

285 ms

pi.css

pi.css

286 ms

subscription-form.css

subscription-form.css

283 ms

custom.css

custom.css

396 ms

classic-10_7.css

classic-10_7.css

19 ms

jquery-1.7.1.min.js

jquery-1.7.1.min.js

391 ms

jquery.lightbox-0.5.js

jquery.lightbox-0.5.js

297 ms

jquery.lightbox-0.5.css

jquery.lightbox-0.5.css

378 ms

obchod.js

obchod.js

378 ms

sio.js

sio.js

379 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

410 ms

jquery.cycle.all.min.js

jquery.cycle.all.min.js

473 ms

jquery.coda-slider-2.0.js

jquery.coda-slider-2.0.js

472 ms

script.js

script.js

471 ms

jquery-ui-1.8.2.custom.min.js

jquery-ui-1.8.2.custom.min.js

492 ms

ga.js

ga.js

66 ms

fba55af58d700427834461c2c.js

fba55af58d700427834461c2c.js

113 ms

1543426199.102334.jpg

1543426199.102334.jpg

112 ms

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1546962394.722191.jpg

193 ms

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1564127082.594411.jpg

194 ms

1540058959.jak-sly-dny-mesice-a-roky.jpg

1540058959.jak-sly-dny-mesice-a-roky.jpg

113 ms

1535707362.cover.jpg

1535707362.cover.jpg

112 ms

1567926461.735146.jpg

1567926461.735146.jpg

197 ms

1535702190.cover.jpg

1535702190.cover.jpg

194 ms

1552911458.105922.jpg

1552911458.105922.jpg

193 ms

1552910617.731865.jpg

1552910617.731865.jpg

199 ms

1565811117.595043.jpg

1565811117.595043.jpg

287 ms

1535709027.cover.jpg

1535709027.cover.jpg

283 ms

1540124572.cover.jpg

1540124572.cover.jpg

284 ms

1565811407.593193.jpg

1565811407.593193.jpg

285 ms

1535701769.morgenland-za-nejvetsim-tajemstvim.jpg

1535701769.morgenland-za-nejvetsim-tajemstvim.jpg

296 ms

1566051065.cover.jpg

1566051065.cover.jpg

298 ms

1535703269.cover.jpg

1535703269.cover.jpg

376 ms

1540835512.757476.jpg

1540835512.757476.jpg

377 ms

1537695768.cover.jpg

1537695768.cover.jpg

379 ms

1603135654.mimino-navod-pro-muze.jpg

1603135654.mimino-navod-pro-muze.jpg

380 ms

1599088373.coffeebox-final-o.jpg

1599088373.coffeebox-final-o.jpg

393 ms

1599085985.titulni.jpg

1599085985.titulni.jpg

394 ms

sdk.js

sdk.js

79 ms

logo-desktop.svg

logo-desktop.svg

448 ms

ico-cart.svg

ico-cart.svg

450 ms

tipy-bg.png

tipy-bg.png

452 ms

tipy-roh.png

tipy-roh.png

453 ms

palec.png

palec.png

469 ms

puntik.png

puntik.png

595 ms

levy-act.png

levy-act.png

541 ms

stred-act.png

stred-act.png

542 ms

pravy-act.png

pravy-act.png

543 ms

levy.png

levy.png

544 ms

stred.png

stred.png

567 ms

pravy.png

pravy.png

634 ms

tl-koupit.png

tl-koupit.png

635 ms

tl-detail.png

tl-detail.png

636 ms

submenu.png

submenu.png

637 ms

gjs.php

gjs.php

435 ms

__utm.gif

__utm.gif

30 ms

sdk.js

sdk.js

5 ms

collect

collect

78 ms

embed.js

embed.js

20 ms

Accessibility Review

databook.cz accessibility score

81

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.

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

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

Links do not have a discernible name

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

databook.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

databook.cz SEO score

87

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

    N/A

  • Encoding

    UTF-8

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

databook.cz

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