Tools & Wizards About Us
zentrale-du.de screenshot

Report Summary

  • 0

    Performance

  • 33

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

zentrale-du.de

Duisburg Firmen, Informationen ( Zentrale-DU ) Stadtinformation, Werbung, Duisburg, Hotels, Immobilien, Stellenmarkt, Freizeit, Stadtauskunft, Sall-Ma...

Page Load Speed

21.4 sec in total

First Response

414 ms

Resources Loaded

20.9 sec

Page Rendered

86 ms

zentrale-du.de screenshot

About Website

Visit zentrale-du.de now to see the best up-to-date Zentrale DU content for Germany and also check out these interesting facts you probably never knew about zentrale-du.de

Duisburg Informationen zu Firmen, Branchen, Veranstaltungen in und um Duisburg. Werbung fr Firmen mit guter Websitpromotion durch Integration der Module des Duisburg Stadtportal http://www.zentrale-du...

Visit zentrale-du.de

Key Findings

We analyzed Zentrale-du.de page load time and found that the first response time was 414 ms and then it took 21 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 was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

zentrale-du.de performance score

0

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0

0/100

10%

LCP (Largest Contentful Paint)

Value0

0/100

25%

SI (Speed Index)

Value0

0/100

10%

TBT (Total Blocking Time)

Value0

0/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value0

0/100

10%

Network Requests Diagram

zentrale-du.de

414 ms

navigationhead_B.html

120 ms

mittestart181203.html

254 ms

kachelbgrstart-11-03.gif

141 ms

navigationhead_B_01.gif

222 ms

Our browser made a total of 95 requests to load all elements on the main page. We found that 48% of them (46 requests) were addressed to the original Zentrale-du.de, 47% (45 requests) were made to Zentrale-du.com and 1% (1 request) were made to Unwetterzentrale.de. The less responsive or slowest element that took the longest time to load (20.3 sec) relates to the external source Zanox-affiliate.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 kB (3%)

Content Size

42.5 kB

After Optimization

41.1 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Zentrale-du.de main page is 42.5 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. 15% of websites need less resources to load. Images take 40.5 kB which makes up the majority of the site volume.

HTML Optimization

-53%

Potential reduce by 1.0 kB

  • Original 1.9 kB
  • After minification 1.9 kB
  • After compression 909 B

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 1.0 kB or 53% of the original size.

Image Optimization

-1%

Potential reduce by 338 B

  • Original 40.5 kB
  • After minification 40.2 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. Zentrale DU images are well optimized though.

JavaScript Optimization

-28%

Potential reduce by 26 B

  • Original 94 B
  • After minification 69 B
  • After compression 68 B

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 26 B or 28% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (70%)

Requests Now

44

After Optimization

13

  • AJAX
  • Images
  • JavaScript

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zentrale DU. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

zentrale-du.de

zentrale-du.de

414 ms

navigationhead_B.html

navigationhead_B.html

120 ms

mittestart181203.html

mittestart181203.html

254 ms

kachelbgrstart-11-03.gif

kachelbgrstart-11-03.gif

141 ms

navigationhead_B_01.gif

navigationhead_B_01.gif

222 ms

navigationhead_B_02.gif

navigationhead_B_02.gif

223 ms

navigationhead_B_03.gif

navigationhead_B_03.gif

223 ms

navigationhead_B_04.gif

navigationhead_B_04.gif

225 ms

spacer.gif

spacer.gif

223 ms

navigationhead_B_06.gif

navigationhead_B_06.gif

224 ms

navigationhead_B_07.gif

navigationhead_B_07.gif

333 ms

navigationhead_B_08.gif

navigationhead_B_08.gif

333 ms

navigationhead_B_09.gif

navigationhead_B_09.gif

335 ms

navigationhead_B_10.gif

navigationhead_B_10.gif

336 ms

navigationhead_B_11.gif

navigationhead_B_11.gif

336 ms

navigationhead_B_12.gif

navigationhead_B_12.gif

333 ms

navigationhead_B_13.gif

navigationhead_B_13.gif

444 ms

navigationhead_B_14.gif

navigationhead_B_14.gif

444 ms

navigationhead_B_16.gif

navigationhead_B_16.gif

445 ms

navigationhead_B_17.gif

navigationhead_B_17.gif

447 ms

navigationhead_B_18.gif

navigationhead_B_18.gif

447 ms

navigationhead_B_19.gif

navigationhead_B_19.gif

446 ms

navigationhead_B_20.gif

navigationhead_B_20.gif

554 ms

navigationhead_B_21.gif

navigationhead_B_21.gif

558 ms

navigationhead_B_23.gif

navigationhead_B_23.gif

559 ms

navigationhead_B_25.gif

navigationhead_B_25.gif

559 ms

navigationhead_B_28.gif

navigationhead_B_28.gif

559 ms

navigationhead_B_30.gif

navigationhead_B_30.gif

559 ms

navigationhead_B_32.gif

navigationhead_B_32.gif

665 ms

navigationhead_B_34.gif

navigationhead_B_34.gif

668 ms

navigationhead_B_35.gif

navigationhead_B_35.gif

671 ms

navigationhead_B_36.gif

navigationhead_B_36.gif

670 ms

navigationhead_B_37.gif

navigationhead_B_37.gif

670 ms

navigationhead_B_38.gif

navigationhead_B_38.gif

669 ms

navigationhead_B_39.gif

navigationhead_B_39.gif

775 ms

navigationhead_B_40.gif

navigationhead_B_40.gif

779 ms

navigationhead_B_41.gif

navigationhead_B_41.gif

780 ms

navigationhead_B_42.gif

navigationhead_B_42.gif

781 ms

kachelbgrstart-11-03.gif

kachelbgrstart-11-03.gif

348 ms

deutschland_preview.png

deutschland_preview.png

175 ms

20259 ms

pacer.gif

pacer.gif

12 ms

date.js

date.js

332 ms

mittestart181203_02.gif

mittestart181203_02.gif

325 ms

mittestart181203_03.gif

mittestart181203_03.gif

326 ms

mittestart181203_04.gif

mittestart181203_04.gif

322 ms

mittestart181203_05.gif

mittestart181203_05.gif

325 ms

mittestart181203_06.gif

mittestart181203_06.gif

335 ms

mittestart181203_07.gif

mittestart181203_07.gif

433 ms

spacer.gif

spacer.gif

434 ms

mittestart181203_10.gif

mittestart181203_10.gif

436 ms

mittestart181203_11.gif

mittestart181203_11.gif

437 ms

mittestart181203_12.gif

mittestart181203_12.gif

435 ms

mittestart181203_13.gif

mittestart181203_13.gif

446 ms

mittestart181203_14.gif

mittestart181203_14.gif

542 ms

mittestart181203_16.gif

mittestart181203_16.gif

544 ms

mittestart181203_17.gif

mittestart181203_17.gif

545 ms

mittestart181203_18.gif

mittestart181203_18.gif

545 ms

mittestart181203_19.gif

mittestart181203_19.gif

546 ms

pfeil.jpg

pfeil.jpg

560 ms

buergermeinungen-anikl02.gif

buergermeinungen-anikl02.gif

652 ms

4,5_blau.gif

4,5_blau.gif

653 ms

3,7_blau.gif

3,7_blau.gif

654 ms

fussball.gif

fussball.gif

655 ms

mittestart181203_21.gif

mittestart181203_21.gif

656 ms

mittestart181203_22.gif

mittestart181203_22.gif

675 ms

mittestart181203_24.gif

mittestart181203_24.gif

762 ms

mittestart181203_26.gif

mittestart181203_26.gif

764 ms

mittestart181203_28.gif

mittestart181203_28.gif

764 ms

mittestart181203_30.gif

mittestart181203_30.gif

765 ms

mittestart181203_32.gif

mittestart181203_32.gif

766 ms

mittestart181203_34.gif

mittestart181203_34.gif

789 ms

mittestart181203_36.gif

mittestart181203_36.gif

872 ms

mittestart181203_38.gif

mittestart181203_38.gif

873 ms

mittestart181203_40.gif

mittestart181203_40.gif

874 ms

mittestart181203_42.gif

mittestart181203_42.gif

874 ms

mittestart181203_43.gif

mittestart181203_43.gif

875 ms

mittestart181203_44.gif

mittestart181203_44.gif

904 ms

spacer.gif

spacer.gif

646 ms

logo_cewe-color.jpg

logo_cewe-color.jpg

754 ms

go_button_hb.gif

go_button_hb.gif

49 ms

logo_mein-cewe-color.jpg

logo_mein-cewe-color.jpg

775 ms

fehlermeldung.html

fehlermeldung.html

243 ms

mittestart181203_45.gif

mittestart181203_45.gif

663 ms

mittestart181203_46.gif

mittestart181203_46.gif

663 ms

mittestart181203_47.gif

mittestart181203_47.gif

663 ms

mittestart181203_48.gif

mittestart181203_48.gif

663 ms

mittestart181203_49.gif

mittestart181203_49.gif

663 ms

mittestart181203_50.gif

mittestart181203_50.gif

688 ms

323 ms

mittestart181203_51.gif

mittestart181203_51.gif

663 ms

frei0,5grau.gif

frei0,5grau.gif

663 ms

fehlermeldung.html

fehlermeldung.html

113 ms

spacer.gif

spacer.gif

112 ms

fehlermeldung.html

fehlermeldung.html

113 ms

Accessibility Review

zentrale-du.de accessibility score

33

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

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

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

Best Practices

zentrale-du.de best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

zentrale-du.de SEO score

67

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    DE

  • Language Claimed

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zentrale-du.de can be misinterpreted by Google and other search engines. Our service has detected that German 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 Zentrale-du.de main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

zentrale-du.de

Open Graph description is not detected on the main page of Zentrale DU. 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: