Tools & Wizards About Us
seznamkatalogu.cz screenshot

Report Summary

  • 91

    Performance

    Renders faster than
    91% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

seznamkatalogu.cz

Seznam katalogů

Page Load Speed

2.7 sec in total

First Response

428 ms

Resources Loaded

2.1 sec

Page Rendered

176 ms

seznamkatalogu.cz screenshot

About Website

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

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Key Findings

We analyzed Seznamkatalogu.cz page load time and found that the first response time was 428 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

seznamkatalogu.cz performance score

91

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

65/100

10%

LCP (Largest Contentful Paint)

Value2.6 s

88/100

25%

SI (Speed Index)

Value3.9 s

83/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.0 s

96/100

10%

Network Requests Diagram

seznamkatalogu.cz

428 ms

www.seznamkatalogu.cz

661 ms

general.css

109 ms

default.css

217 ms

jquery-1.4.2.min.js

320 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 95% of them (36 requests) were addressed to the original Seznamkatalogu.cz, 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (661 ms) belongs to the original domain Seznamkatalogu.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 38.6 kB (43%)

Content Size

90.2 kB

After Optimization

51.6 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Seznamkatalogu.cz main page is 90.2 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. 20% of websites need less resources to load. Javascripts take 45.7 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 32.5 kB

  • Original 38.6 kB
  • After minification 34.4 kB
  • After compression 6.2 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 4.2 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 32.5 kB or 84% of the original size.

JavaScript Optimization

-9%

Potential reduce by 4.0 kB

  • Original 45.7 kB
  • After minification 45.7 kB
  • After compression 41.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-36%

Potential reduce by 2.1 kB

  • Original 5.9 kB
  • After minification 5.9 kB
  • After compression 3.8 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. Seznamkatalogu.cz needs all CSS files to be minified and compressed as it can save up to 2.1 kB or 36% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (56%)

Requests Now

36

After Optimization

16

  • Images
  • JavaScript
  • CSS

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

Network Requests Diagram

seznamkatalogu.cz

seznamkatalogu.cz

428 ms

www.seznamkatalogu.cz

www.seznamkatalogu.cz

661 ms

general.css

general.css

109 ms

default.css

default.css

217 ms

jquery-1.4.2.min.js

jquery-1.4.2.min.js

320 ms

backgr_body.gif

backgr_body.gif

110 ms

backgr_header.gif

backgr_header.gif

108 ms

logo.gif

logo.gif

109 ms

header_pocet-katalogu.gif

header_pocet-katalogu.gif

215 ms

header_prumerny-PR.gif

header_prumerny-PR.gif

213 ms

header_prumerny-SR.gif

header_prumerny-SR.gif

215 ms

breadcrumb-backgr.gif

breadcrumb-backgr.gif

217 ms

img_banner.gif

img_banner.gif

218 ms

backgr_h2.gif

backgr_h2.gif

188 ms

img_bullet.gif

img_bullet.gif

292 ms

btn_oznacit.gif

btn_oznacit.gif

292 ms

btn_zrusit.gif

btn_zrusit.gif

298 ms

btn_cancel.gif

btn_cancel.gif

297 ms

btn_vyber.gif

btn_vyber.gif

294 ms

backgr_rightColumn.gif

backgr_rightColumn.gif

296 ms

backgr_rightColumn-nadpis.gif

backgr_rightColumn-nadpis.gif

399 ms

no_1.gif

no_1.gif

398 ms

no_2.gif

no_2.gif

400 ms

no_3.gif

no_3.gif

403 ms

no_4.gif

no_4.gif

403 ms

no_5.gif

no_5.gif

401 ms

btn_x.gif

btn_x.gif

504 ms

btn_vsechny-katalogy.gif

btn_vsechny-katalogy.gif

484 ms

topSeznam.gif

topSeznam.gif

485 ms

topPridat.gif

topPridat.gif

488 ms

backgr_mainMenu.gif

backgr_mainMenu.gif

488 ms

menoTop-arrow.gif

menoTop-arrow.gif

489 ms

backgr_login.gif

backgr_login.gif

590 ms

btn_login.gif

btn_login.gif

590 ms

btn_registrace.gif

btn_registrace.gif

590 ms

backgr_footer.gif

backgr_footer.gif

594 ms

ga.js

ga.js

9 ms

__utm.gif

__utm.gif

12 ms

Accessibility Review

seznamkatalogu.cz accessibility score

74

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

Form elements do not have associated labels

Best Practices

seznamkatalogu.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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

seznamkatalogu.cz SEO score

75

Search Engine Optimization Advices

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 Seznamkatalogu.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 Seznamkatalogu.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

seznamkatalogu.cz

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