Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 43% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

dunahouse.cz

Služby v oblasti nemovitostí a hypoték - Duna House

Page Load Speed

72.5 sec in total

First Response

513 ms

Resources Loaded

40.7 sec

Page Rendered

31.3 sec

dunahouse.cz screenshot

About Website

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

Téměř 1000 nemovitosti na prodej, pronájem a měsíčně nabízíme 100 nových. Vyberte si vedoucí postavení na trhu služeb Duna House!

Visit dunahouse.cz

Key Findings

We analyzed Dunahouse.cz page load time and found that the first response time was 513 ms and then it took 71.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 23 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

dunahouse.cz performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.2 s

3/100

10%

LCP (Largest Contentful Paint)

Value6.3 s

10/100

25%

SI (Speed Index)

Value14.0 s

1/100

10%

TBT (Total Blocking Time)

Value7,970 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.035

100/100

15%

TTI (Time to Interactive)

Value21.3 s

1/100

10%

Network Requests Diagram

dunahouse.cz

513 ms

dunahouse.cz

1975 ms

css

1102 ms

jquery2.2.0.js

1103 ms

header.min.js

1975 ms

Our browser made a total of 147 requests to load all elements on the main page. We found that 30% of them (44 requests) were addressed to the original Dunahouse.cz, 55% (81 requests) were made to Dhportal.cz and 3% (4 requests) were made to Maps.google.com. The less responsive or slowest element that took the longest time to load (25 sec) relates to the external source Dhportal.cz.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.1 MB (15%)

Content Size

7.5 MB

After Optimization

6.4 MB

In fact, the total size of Dunahouse.cz main page is 7.5 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. 85% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 6.2 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 549.7 kB

  • Original 623.2 kB
  • After minification 336.2 kB
  • After compression 73.5 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 287.0 kB, which is 46% 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 549.7 kB or 88% of the original size.

Image Optimization

-2%

Potential reduce by 121.9 kB

  • Original 6.2 MB
  • After minification 6.0 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. Duna House images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 2.5 kB

  • Original 167.5 kB
  • After minification 167.3 kB
  • After compression 165.0 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

-82%

Potential reduce by 451.4 kB

  • Original 552.5 kB
  • After minification 552.5 kB
  • After compression 101.2 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. Dunahouse.cz needs all CSS files to be minified and compressed as it can save up to 451.4 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (22%)

Requests Now

118

After Optimization

92

The browser has sent 118 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duna House. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

dunahouse.cz accessibility score

76

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

High

Some elements have a [tabindex] value greater than 0

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

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

dunahouse.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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

dunahouse.cz SEO score

83

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

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

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 Dunahouse.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 Dunahouse.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

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