Tools & Wizards About Us
byty.cz screenshot

Report Summary

  • 36

    Performance

    Renders faster than
    56% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

byty.cz

Byty na prodej a k pronájmu

Page Load Speed

4.8 sec in total

First Response

516 ms

Resources Loaded

3.9 sec

Page Rendered

372 ms

byty.cz screenshot

About Website

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

Aktuální nabídka bytů a dalších nemovitostí z celé ČR. Byty, domy, pozemky, nebytové prostory a ostatní reality k prodeji i pronájmu. Inzerce bez realitky i s realitkou.

Visit byty.cz

Key Findings

We analyzed Byty.cz page load time and found that the first response time was 516 ms and then it took 4.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

byty.cz performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

43/100

25%

SI (Speed Index)

Value7.0 s

32/100

10%

TBT (Total Blocking Time)

Value1,520 ms

13/100

30%

CLS (Cumulative Layout Shift)

Value0.008

100/100

15%

TTI (Time to Interactive)

Value15.1 s

7/100

10%

Network Requests Diagram

byty.cz

516 ms

www.byty.cz

872 ms

gtm.js

63 ms

css

43 ms

allstyles.min.css

442 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 42% of them (25 requests) were addressed to the original Byty.cz, 45% (27 requests) were made to Imga.byty.cz and 5% (3 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.1 sec) relates to the external source Imga.byty.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 115.0 kB (11%)

Content Size

1.1 MB

After Optimization

973.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Byty.cz main page is 1.1 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. 50% of websites need less resources to load. Images take 705.1 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 86.4 kB

  • Original 102.8 kB
  • After minification 82.7 kB
  • After compression 16.4 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 20.1 kB, which is 20% 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 86.4 kB or 84% of the original size.

Image Optimization

-4%

Potential reduce by 26.2 kB

  • Original 705.1 kB
  • After minification 678.9 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. Byty images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 2.3 kB

  • Original 219.4 kB
  • After minification 219.4 kB
  • After compression 217.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 73 B

  • Original 61.6 kB
  • After minification 61.6 kB
  • After compression 61.6 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. Byty.cz has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 9 (16%)

Requests Now

57

After Optimization

48

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Byty. 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 as a result speed up the page load time.

Network Requests Diagram

byty.cz

byty.cz

516 ms

www.byty.cz

www.byty.cz

872 ms

gtm.js

gtm.js

63 ms

css

css

43 ms

allstyles.min.css

allstyles.min.css

442 ms

adsbygoogle.js

adsbygoogle.js

116 ms

WebResource.axd

WebResource.axd

420 ms

ScriptResource.axd

ScriptResource.axd

526 ms

ScriptResource.axd

ScriptResource.axd

421 ms

js

js

82 ms

destination

destination

40 ms

byty.min.js

byty.min.js

762 ms

04_152006LvEAEulFXu_4.jpg

04_152006LvEAEulFXu_4.jpg

945 ms

kalkulacka.jpg

kalkulacka.jpg

305 ms

logo-byty-paticka.png

logo-byty-paticka.png

143 ms

04_002258IuUSyscwje_4.jpg

04_002258IuUSyscwje_4.jpg

640 ms

04_0644165kFNjhOIyA_4.jpg

04_0644165kFNjhOIyA_4.jpg

1798 ms

04_1006155ZZI3GCUjY_4.jpg

04_1006155ZZI3GCUjY_4.jpg

1419 ms

04_064516JlWMkaAP46_4.jpg

04_064516JlWMkaAP46_4.jpg

1183 ms

04_152735LlwE3421u4_4.jpg

04_152735LlwE3421u4_4.jpg

1043 ms

04_093941aFx01oW5YQ_4.jpg

04_093941aFx01oW5YQ_4.jpg

756 ms

04_080017lsvF6jR026_4.jpg

04_080017lsvF6jR026_4.jpg

857 ms

04_134826eTYZX7uACC_4.jpg

04_134826eTYZX7uACC_4.jpg

960 ms

04_211905AbN1r2Z3dL_4.jpg

04_211905AbN1r2Z3dL_4.jpg

1390 ms

04_141509qoOUClH1Pq_4.jpg

04_141509qoOUClH1Pq_4.jpg

1063 ms

04_064206oTlP8Hg3n9_4.jpg

04_064206oTlP8Hg3n9_4.jpg

1385 ms

04_075944i65FFZp9T4_4.jpg

04_075944i65FFZp9T4_4.jpg

1165 ms

04_175904P7I9ZjEL9q_4.jpg

04_175904P7I9ZjEL9q_4.jpg

1669 ms

04_132604tqwMvfM6Dz_4.jpg

04_132604tqwMvfM6Dz_4.jpg

1484 ms

04_064610EYOdCkLiJF_4.jpg

04_064610EYOdCkLiJF_4.jpg

1586 ms

04_211331AHPbHIzkCw_4.jpg

04_211331AHPbHIzkCw_4.jpg

1491 ms

04_172247SonTSSTKSJ_4.jpg

04_172247SonTSSTKSJ_4.jpg

2072 ms

04EX_072351e30ZiAZRUIHRgImVSJ2WAex8X_4.jpg

04EX_072351e30ZiAZRUIHRgImVSJ2WAex8X_4.jpg

1686 ms

04EX_071757IqIt8zE0vtG7i9JOHwX1PL4pU_4.jpg

04EX_071757IqIt8zE0vtG7i9JOHwX1PL4pU_4.jpg

1594 ms

04EX_071631Ii1M9gcLNVsXxMohQ8WiDxl9H_4.jpg

04EX_071631Ii1M9gcLNVsXxMohQ8WiDxl9H_4.jpg

1689 ms

04EX_071232PT5hX4hJpBI3Kzihv8YkRFJr8_4.jpg

04EX_071232PT5hX4hJpBI3Kzihv8YkRFJr8_4.jpg

1709 ms

04_154721wedopqV5JW_4.jpg

04_154721wedopqV5JW_4.jpg

2111 ms

04EX_071727SfChRQh6Mhsam0zI1qZf27gkw_4.jpg

04EX_071727SfChRQh6Mhsam0zI1qZf27gkw_4.jpg

1887 ms

balkon1_1_d.jpg

balkon1_1_d.jpg

1890 ms

blue%20light_d.jpg

blue%20light_d.jpg

1811 ms

keysx_d.jpg

keysx_d.jpg

2095 ms

logo_byty_modre.svg

logo_byty_modre.svg

143 ms

web-bg3.jpg

web-bg3.jpg

774 ms

logo.svg

logo.svg

145 ms

bck_paticka.jpg

bck_paticka.jpg

171 ms

bazar.png

bazar.png

440 ms

byty.png

byty.png

275 ms

novina.png

novina.png

434 ms

pocitace.png

pocitace.png

439 ms

rande.png

rande.png

439 ms

seznamit.png

seznamit.png

439 ms

seznamka.png

seznamka.png

439 ms

spolu.png

spolu.png

778 ms

zamestnani.png

zamestnani.png

677 ms

zverokruh.png

zverokruh.png

776 ms

font

font

46 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

843 ms

sdk.js

sdk.js

29 ms

screenw.aspx

screenw.aspx

117 ms

sdk.js

sdk.js

5 ms

Accessibility Review

byty.cz accessibility score

82

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

byty.cz best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Requests the geolocation permission on page load

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

Missing source maps for large first-party JavaScript

SEO Factors

byty.cz SEO score

90

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

    CS

  • Encoding

    UTF-8

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

byty.cz

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