Tools & Wizards About Us

Report Summary

  • 63

    Performance

    Renders faster than
    77% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

open4u.de

Schlüsseldienst Essen ✔️ 24/7 mit Festpreis ab 59€!

Page Load Speed

3.9 sec in total

First Response

235 ms

Resources Loaded

2.5 sec

Page Rendered

1.2 sec

About Website

Click here to check amazing Open 4 U content for Germany. Otherwise, check out these important facts you probably never knew about open4u.de

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Key Findings

We analyzed Open4u.de page load time and found that the first response time was 235 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

open4u.de performance score

63

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

36/100

10%

LCP (Largest Contentful Paint)

Value7.3 s

5/100

25%

SI (Speed Index)

Value4.6 s

70/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.011

100/100

15%

TTI (Time to Interactive)

Value6.4 s

60/100

10%

Network Requests Diagram

open4u.de

235 ms

www.open4u.de

527 ms

duby0.css

186 ms

css

36 ms

duby0.css

193 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 71% of them (36 requests) were addressed to the original Open4u.de, 18% (9 requests) were made to Lh3.googleusercontent.com and 6% (3 requests) were made to Cdn.trustindex.io. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Open4u.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 696.8 kB (24%)

Content Size

3.0 MB

After Optimization

2.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Open4u.de main page is 3.0 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. 35% of websites need less resources to load. Images take 2.6 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 215.0 kB

  • Original 252.7 kB
  • After minification 252.0 kB
  • After compression 37.7 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 215.0 kB or 85% of the original size.

Image Optimization

-18%

Potential reduce by 481.0 kB

  • Original 2.6 MB
  • After minification 2.1 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. Obviously, Open 4 U needs image optimization as it can save up to 481.0 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 132 B

  • Original 49.3 kB
  • After minification 49.3 kB
  • After compression 49.2 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

-1%

Potential reduce by 654 B

  • Original 45.9 kB
  • After minification 45.9 kB
  • After compression 45.3 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. Open4u.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 18 (43%)

Requests Now

42

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 42 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Open 4 U. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

open4u.de accessibility score

96

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

Best Practices

open4u.de best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

open4u.de SEO score

100

Search Engine Optimization Advices

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

    DE

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Open4u.de can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it matches the claimed language. Our system also found out that Open4u.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 data is detected on the main page of Open 4 U. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: