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Report Summary

About Website

Visit levneknihy.cz now to see the best up-to-date Levneknihy content for Czech Republic and also check out these interesting facts you probably never knew about levneknihy.cz

E-shop www.levneknihy.cz, to jsou každý týden nové knihy za nejnižší ceny. Můžete si prohlížet a vybírat; vybírat a nakupovat… A kdo u nás nakoupí nad 749 Kč, může se těšit na poštovné zdarma.

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name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value8.3 s

2/100

25%

SI (Speed Index)

Value10.8 s

6/100

10%

TBT (Total Blocking Time)

Value2,940 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value16.9 s

5/100

10%

levneknihy.cz

388 ms

levneknihy.cz

385 ms

www.levneknihy.cz

401 ms

www.levneknihy.cz

1975 ms

css2

41 ms

Our browser made a total of 145 requests to load all elements on the main page. We found that 90% of them (131 requests) were addressed to the original Levneknihy.cz, 2% (3 requests) were made to Googletagmanager.com and 1% (2 requests) were made to Assets.shean.cz. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Levneknihy.cz.

Content Size

2.6 MB

After Optimization

1.9 MB

In fact, the total size of Levneknihy.cz main page is 2.6 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. 70% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 130.3 kB

Original 152.3 kB
After minification 151.4 kB
After compression 22.0 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. 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 130.3 kB or 86% of the original size.

Image Optimization

-3%

Potential reduce by 56.4 kB

Original 1.7 MB
After minification 1.6 MB

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. Levneknihy images are well optimized though.

JavaScript Optimization

-65%

Potential reduce by 247.4 kB

Original 379.2 kB
After minification 379.2 kB
After compression 131.7 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 247.4 kB or 65% of the original size.

CSS Optimization

-82%

Potential reduce by 270.2 kB

Original 330.3 kB
After minification 326.5 kB
After compression 60.1 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. Levneknihy.cz needs all CSS files to be minified and compressed as it can save up to 270.2 kB or 82% of the original size.

Requests Now

140

After Optimization

115

The browser has sent 140 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Levneknihy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Links do not have a discernible name

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

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/).

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 Levneknihy.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 Levneknihy.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

levneknihy.cz

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Knihy pro celou rodinu | Levneknihy.cz

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

levneknihy.cz

levneknihy.cz

www.levneknihy.cz

www.levneknihy.cz

css2

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

levneknihy.cz

levneknihy.cz

www.levneknihy.cz

www.levneknihy.cz

css2

fpi1usg.css

stylesheet.min.css

fancybox-popups.css

cart.min.css

js.cookie.js

jquery.min.js

cookieconsent.min.js

app.min.js

functions.js

p.css

gtm.js

icons.svg

logo.svg

posta.png

zasilkovna.png

orwell_%281%29_2.jpg

detske_knizky.jpg

poezie%281%29.jpg

literatura_faktu%281%29.jpg

kucharky%281%29.jpg

komiksy%281%29.jpg

krizovky_sudoku.png

Naucne_a_vzdel._%281%29_.jpg

cestovani%281%29.jpg

zdravy_zivotni_styl%281%29.jpg

hobby_a_zahrada%281%29.jpg

pro_koho_%281%29.jpg

puzzle_lk_35_52_png2.png

helen_fieldsova_dokonala_smrt_knizka_1.png

orwell_fararova_dcera_pozadi_1.jpg

orwell_fararova_dcera_kniha.png

orwell_fararova_dcera_pozadi.jpg

casey_jones_srdce_v_plamenech.png

srdce_v_plamenech_pozadi.jpg

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