Tools & Wizards About Us
levnadatabaze.cz screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 64

    Accessibility

    Visual factors better than
    that of 29% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

levnadatabaze.cz

Databáze firem a podnikatelů - Levná Databáze.cz

Page Load Speed

4.2 sec in total

First Response

430 ms

Resources Loaded

3.3 sec

Page Rendered

485 ms

levnadatabaze.cz screenshot

About Website

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

Potřebujete nové zákazníky? Kupte si databázi firem a podnikatelů. Díky tomu můžete získat hromady nových objednávek.

Visit levnadatabaze.cz

Key Findings

We analyzed Levnadatabaze.cz page load time and found that the first response time was 430 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

levnadatabaze.cz performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value8.1 s

2/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value2,450 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.133

80/100

15%

TTI (Time to Interactive)

Value13.7 s

11/100

10%

Network Requests Diagram

levnadatabaze.cz

430 ms

www.levnadatabaze.cz

729 ms

uwt.js

70 ms

bootstrap.min.css

484 ms

slicknav.min.css

397 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 60% of them (29 requests) were addressed to the original Levnadatabaze.cz, 13% (6 requests) were made to Fonts.gstatic.com and 6% (3 requests) were made to Use.fontawesome.com. The less responsive or slowest element that took the longest time to load (1.6 sec) belongs to the original domain Levnadatabaze.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 557.7 kB (76%)

Content Size

732.1 kB

After Optimization

174.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Levnadatabaze.cz main page is 732.1 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. 45% of websites need less resources to load. CSS take 418.0 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 7.7 kB

  • Original 11.2 kB
  • After minification 9.9 kB
  • After compression 3.5 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 1.3 kB, which is 11% 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 7.7 kB or 69% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 12.2 kB
  • After minification 12.2 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. Levnadatabaze images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 202.6 kB

  • Original 290.7 kB
  • After minification 287.4 kB
  • After compression 88.1 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 202.6 kB or 70% of the original size.

CSS Optimization

-83%

Potential reduce by 347.5 kB

  • Original 418.0 kB
  • After minification 374.0 kB
  • After compression 70.6 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. Levnadatabaze.cz needs all CSS files to be minified and compressed as it can save up to 347.5 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 30 (83%)

Requests Now

36

After Optimization

6

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Levnadatabaze. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

levnadatabaze.cz

levnadatabaze.cz

430 ms

www.levnadatabaze.cz

www.levnadatabaze.cz

729 ms

uwt.js

uwt.js

70 ms

bootstrap.min.css

bootstrap.min.css

484 ms

slicknav.min.css

slicknav.min.css

397 ms

icofont.css

icofont.css

711 ms

slick.css

slick.css

438 ms

font-awesome.min.css

font-awesome.min.css

537 ms

owl.carousel.css

owl.carousel.css

422 ms

magnific-popup.css

magnific-popup.css

515 ms

switcher-style.css

switcher-style.css

539 ms

animate.min.css

animate.min.css

735 ms

style.css

style.css

614 ms

responsive.css

responsive.css

628 ms

all.css

all.css

312 ms

jquery-2.1.1.min.js

jquery-2.1.1.min.js

174 ms

jquery.min.js

jquery.min.js

1013 ms

bootstrap.min.js

bootstrap.min.js

1010 ms

jquery.slicknav.min.js

jquery.slicknav.min.js

1001 ms

slick.min.js

slick.min.js

1078 ms

owl.carousel.min.js

owl.carousel.min.js

1054 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

1071 ms

jquery.counterup.min.js

jquery.counterup.min.js

1071 ms

waypoints.min.js

waypoints.min.js

1069 ms

jquery.mb.YTPlayer.min.js

jquery.mb.YTPlayer.min.js

1069 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

1312 ms

gmap3.min.js

gmap3.min.js

1324 ms

js

js

246 ms

custom-map.js

custom-map.js

1320 ms

wow-1.3.0.min.js

wow-1.3.0.min.js

1315 ms

switcher.js

switcher.js

1313 ms

main.js

main.js

1303 ms

ld_logo.png

ld_logo.png

1646 ms

adsct

adsct

142 ms

adsct

adsct

131 ms

css

css

56 ms

fbevents.js

fbevents.js

292 ms

pxiEyp8kv8JHgFVrJJfedw.ttf

pxiEyp8kv8JHgFVrJJfedw.ttf

507 ms

pxiByp8kv8JHgFVrLGT9Z1xlEA.ttf

pxiByp8kv8JHgFVrLGT9Z1xlEA.ttf

510 ms

pxiByp8kv8JHgFVrLDz8Z1xlEA.ttf

pxiByp8kv8JHgFVrLDz8Z1xlEA.ttf

518 ms

pxiByp8kv8JHgFVrLEj6Z1xlEA.ttf

pxiByp8kv8JHgFVrLEj6Z1xlEA.ttf

522 ms

pxiByp8kv8JHgFVrLCz7Z1xlEA.ttf

pxiByp8kv8JHgFVrLCz7Z1xlEA.ttf

513 ms

pxiByp8kv8JHgFVrLBT5Z1xlEA.ttf

pxiByp8kv8JHgFVrLBT5Z1xlEA.ttf

521 ms

fa-solid-900.woff

fa-solid-900.woff

499 ms

fa-regular-400.woff

fa-regular-400.woff

601 ms

583213349515823

583213349515823

497 ms

gen_204

gen_204

191 ms

provoz.php

provoz.php

606 ms

Accessibility Review

levnadatabaze.cz accessibility score

64

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Image elements do not have [alt] attributes

Best Practices

levnadatabaze.cz best practices score

67

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

levnadatabaze.cz SEO score

92

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

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

    N/A

  • Encoding

    UTF-8

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

levnadatabaze.cz

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