Tools & Wizards About Us
osman-cologne.de screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

osman-cologne.de

OSMAN30 Köln - Restaurant mit spektakulärem Domblick

Page Load Speed

9.1 sec in total

First Response

334 ms

Resources Loaded

7.5 sec

Page Rendered

1.3 sec

osman-cologne.de screenshot

About Website

Click here to check amazing Osman Cologne content for Germany. Otherwise, check out these important facts you probably never knew about osman-cologne.de

Internationale Spitzen-Küche in 110m Höhe, ein spektakulärer Ausblick auf Dom und Fernsehturm und die höchste Restaurant-Terrasse in Köln!

Visit osman-cologne.de

Key Findings

We analyzed Osman-cologne.de page load time and found that the first response time was 334 ms and then it took 8.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

osman-cologne.de performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

17/100

10%

LCP (Largest Contentful Paint)

Value22.2 s

0/100

25%

SI (Speed Index)

Value13.6 s

2/100

10%

TBT (Total Blocking Time)

Value10,900 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value38.2 s

0/100

10%

Network Requests Diagram

osman-cologne.de

334 ms

osman30.de

779 ms

reusablec-block.css

288 ms

style.min.css

421 ms

classic-themes.min.css

323 ms

Our browser made a total of 208 requests to load all elements on the main page. We found that 0% of them (1 request) were addressed to the original Osman-cologne.de, 48% (100 requests) were made to Osman30.de and 43% (90 requests) were made to Assets-www.web-dev.euwest1.aws.quandoo.com. The less responsive or slowest element that took the longest time to load (2.5 sec) relates to the external source Osman30.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 349.9 kB (5%)

Content Size

6.9 MB

After Optimization

6.6 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Osman-cologne.de main page is 6.9 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. Only a small number of websites need less resources to load. Images take 4.0 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 343.7 kB

  • Original 402.7 kB
  • After minification 384.2 kB
  • After compression 59.0 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 343.7 kB or 85% of the original size.

Image Optimization

-0%

Potential reduce by 8 B

  • Original 4.0 MB
  • After minification 4.0 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. Osman Cologne images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 6.2 kB

  • Original 2.5 MB
  • After minification 2.5 MB
  • After compression 2.5 MB

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.

Requests Breakdown

Number of requests can be reduced by 167 (85%)

Requests Now

196

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 196 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Osman Cologne. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 137 to 1 for JavaScripts and from 32 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

osman-cologne.de

osman-cologne.de

334 ms

osman30.de

osman30.de

779 ms

reusablec-block.css

reusablec-block.css

288 ms

style.min.css

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421 ms

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323 ms

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326 ms

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341 ms

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885 ms

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783 ms

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1052 ms

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1104 ms

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1591 ms

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Accessibility Review

osman-cologne.de accessibility score

81

Accessibility Issues

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

Buttons do not have an accessible name

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

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

osman-cologne.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

osman-cologne.de SEO score

92

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

    DE

  • Encoding

    UTF-8

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

osman-cologne.de

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