Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    47% of websites

  • 87

    SEO

    Google-friendlier than
    71% of websites

kozlowski-immobilien.de

Immobilien in Mannheim, Rhein-Neckar & an der Weinstraße | Kozlowski Immobilien

Page Load Speed

8.3 sec in total

First Response

637 ms

Resources Loaded

7.1 sec

Page Rendered

599 ms

kozlowski-immobilien.de screenshot

About Website

Click here to check amazing Kozlowski Immobilien content. Otherwise, check out these important facts you probably never knew about kozlowski-immobilien.de

Kozlowski Immobilien - Immobilien in den besten Lagen: Mannheim, Heidelberg, Bergstraße, Weinstraße, Region Rhein-Neckar

Visit kozlowski-immobilien.de

Key Findings

We analyzed Kozlowski-immobilien.de page load time and found that the first response time was 637 ms and then it took 7.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster. This domain responded with an error, which can significantly jeopardize Kozlowski-immobilien.de rating and web reputation

Performance Metrics

kozlowski-immobilien.de performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

69/100

10%

LCP (Largest Contentful Paint)

Value17.1 s

0/100

25%

SI (Speed Index)

Value9.3 s

12/100

10%

TBT (Total Blocking Time)

Value540 ms

55/100

30%

CLS (Cumulative Layout Shift)

Value0.024

100/100

15%

TTI (Time to Interactive)

Value12.4 s

15/100

10%

Network Requests Diagram

kozlowski-immobilien.de

637 ms

swfobject.js

9 ms

jwplayer.js

222 ms

mootools124.js

539 ms

kzw.js

286 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 85% of them (41 requests) were addressed to the original Kozlowski-immobilien.de, 4% (2 requests) were made to Googleadservices.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (6.2 sec) belongs to the original domain Kozlowski-immobilien.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 548.4 kB (8%)

Content Size

6.5 MB

After Optimization

6.0 MB

In fact, the total size of Kozlowski-immobilien.de main page is 6.5 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. 30% of websites need less resources to load. Images take 6.3 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 18.3 kB

  • Original 24.2 kB
  • After minification 22.9 kB
  • After compression 5.9 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 18.3 kB or 76% of the original size.

Image Optimization

-6%

Potential reduce by 387.8 kB

  • Original 6.3 MB
  • After minification 5.9 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. Kozlowski Immobilien images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 122.6 kB

  • Original 197.5 kB
  • After minification 181.2 kB
  • After compression 74.9 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 122.6 kB or 62% of the original size.

CSS Optimization

-81%

Potential reduce by 19.7 kB

  • Original 24.3 kB
  • After minification 18.2 kB
  • After compression 4.6 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. Kozlowski-immobilien.de needs all CSS files to be minified and compressed as it can save up to 19.7 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (35%)

Requests Now

43

After Optimization

28

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kozlowski Immobilien. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

kozlowski-immobilien.de accessibility score

85

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

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

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

kozlowski-immobilien.de best practices score

75

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

Missing source maps for large first-party JavaScript

SEO Factors

kozlowski-immobilien.de SEO score

87

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kozlowski-immobilien.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it does not match the claimed English language. Our system also found out that Kozlowski-immobilien.de 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 description is not detected on the main page of Kozlowski Immobilien. 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: