Access zollverein.de. UNESCO-Welterbe Zollverein - Leuchtturm für das Ruhrgebiet

31

Performance

Renders faster than
51% of other websites
77

Accessibility

Visual factors better than
that of 44% of websites
92

Best Practices

More advanced features
available than in
80% of websites
91

SEO

Google-friendlier than
70% of websites

First Response

372 ms

Resources Loaded

1.2 sec

Page Rendered

780 ms

About Website

Click here to check amazing Zollverein content for Germany. Otherwise, check out these important facts you probably never knew about zollverein.de

Das UNESCO-Welterbe Zeche und Kokerei Zollverein, bekannt als die „schönste Zeche der Welt“, ehemals größte Steinkohlenzeche der Welt und größte Zentralkokerei Europas, ist heute das lebendige Wahrzei...

Visit zollverein.de

Key Findings

We analyzed Zollverein.de page load time and found that the first response time was 372 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

67/100

10%

LCP (Largest Contentful Paint)

Value6.8 s

7/100

25%

SI (Speed Index)

Value5.9 s

48/100

10%

TBT (Total Blocking Time)

Value2,510 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value11.9 s

17/100

10%

zollverein.de

372 ms

www.zollverein.de

169 ms

style.min.css

32 ms

hide-admin-bar-based-on-user-roles-public.css

15 ms

generic-no-float.min.css

18 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 25% of them (17 requests) were addressed to the original Zollverein.de, 75% (52 requests) were made to Zollverein-cm.imgix.net. The less responsive or slowest element that took the longest time to load (492 ms) belongs to the original domain Zollverein.de.

Content Size

746.2 kB

After Optimization

467.7 kB

In fact, the total size of Zollverein.de main page is 746.2 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 55% of websites need less resources to load. Images take 423.5 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 278.5 kB

Original 322.7 kB
After minification 308.5 kB
After compression 44.2 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 278.5 kB or 86% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

Original 423.5 kB
After minification 423.5 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. Zollverein images are well optimized though.

Requests Now

After Optimization

The browser has sent 63 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zollverein. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

[role]s are not contained by their required parent element

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.

High

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

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 Zollverein.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 Zollverein.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

zollverein.de

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

Report Summary

Performance

Accessibility

Best Practices

SEO

UNESCO-Welterbe Zollverein - Leuchtturm für das Ruhrgebiet

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)