Tools & Wizards About Us
centron.net screenshot

Report Summary

  • 48

    Performance

    Renders faster than
    67% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 89

    SEO

    Google-friendlier than
    67% of websites

centron.net

centron Managed Server, Cloud and GPU mieten mit ISO 27001

Page Load Speed

4.1 sec in total

First Response

364 ms

Resources Loaded

3.5 sec

Page Rendered

253 ms

centron.net screenshot

About Website

Visit centron.net now to see the best up-to-date Centron content for Germany and also check out these interesting facts you probably never knew about centron.net

Managed Server & IT-Services mieten von centron. Nur wer digital mit Cloud Services denkt, wird langfristig Erfolg haben.

Visit centron.net

Key Findings

We analyzed Centron.net page load time and found that the first response time was 364 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 60% of websites can load faster.

Performance Metrics

centron.net performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value9.0 s

1/100

25%

SI (Speed Index)

Value7.8 s

23/100

10%

TBT (Total Blocking Time)

Value280 ms

81/100

30%

CLS (Cumulative Layout Shift)

Value0.022

100/100

15%

TTI (Time to Interactive)

Value9.4 s

30/100

10%

Network Requests Diagram

centron.net

364 ms

www.centron.de

601 ms

style.min.css

111 ms

all.min.css

221 ms

mincss

819 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Centron.net, 88% (58 requests) were made to Centron.de and 5% (3 requests) were made to Livechat.internet1.de. The less responsive or slowest element that took the longest time to load (833 ms) relates to the external source Centron.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 480.1 kB (50%)

Content Size

963.2 kB

After Optimization

483.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Centron.net main page is 963.2 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. 25% of websites need less resources to load. Images take 454.5 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 46.8 kB

  • Original 56.1 kB
  • After minification 47.4 kB
  • After compression 9.3 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. This page needs HTML code to be minified as it can gain 8.7 kB, which is 16% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 46.8 kB or 83% of the original size.

Image Optimization

-10%

Potential reduce by 46.4 kB

  • Original 454.5 kB
  • After minification 408.1 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. Centron images are well optimized though.

JavaScript Optimization

-77%

Potential reduce by 89.7 kB

  • Original 117.1 kB
  • After minification 90.1 kB
  • After compression 27.4 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 89.7 kB or 77% of the original size.

CSS Optimization

-89%

Potential reduce by 297.2 kB

  • Original 335.4 kB
  • After minification 258.8 kB
  • After compression 38.2 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. Centron.net needs all CSS files to be minified and compressed as it can save up to 297.2 kB or 89% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (38%)

Requests Now

64

After Optimization

40

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Centron. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

centron.net

centron.net

364 ms

www.centron.de

www.centron.de

601 ms

style.min.css

style.min.css

111 ms

all.min.css

all.min.css

221 ms

mincss

mincss

819 ms

jquery-1.7.2.min.js

jquery-1.7.2.min.js

454 ms

jquery-ui-1.8.17.custom.min.js

jquery-ui-1.8.17.custom.min.js

433 ms

minjs

minjs

691 ms

plugins.js

plugins.js

347 ms

script.min.js

script.min.js

343 ms

page-bright.gif

page-bright.gif

144 ms

logo-centron.png

logo-centron.png

126 ms

check-in.gif

check-in.gif

124 ms

cart.gif

cart.gif

124 ms

bg-content.jpg

bg-content.jpg

332 ms

icon-04.png

icon-04.png

122 ms

bg-overlay3.png

bg-overlay3.png

194 ms

price-2.png

price-2.png

210 ms

price-9.png

price-9.png

212 ms

price-comma.png

price-comma.png

213 ms

price-0.png

price-0.png

214 ms

price-euro.png

price-euro.png

299 ms

price-1.png

price-1.png

312 ms

price-5.png

price-5.png

317 ms

price-4.png

price-4.png

318 ms

price-7.png

price-7.png

320 ms

bg-overlay8.png

bg-overlay8.png

404 ms

bullet-01.gif

bullet-01.gif

415 ms

price-8.png

price-8.png

421 ms

price-3.png

price-3.png

422 ms

price-6.png

price-6.png

425 ms

bg-overlay.png

bg-overlay.png

435 ms

l.png

l.png

508 ms

r.png

r.png

518 ms

no_img_05.png

no_img_05.png

526 ms

bg-overlay4.png

bg-overlay4.png

528 ms

hg_slider2_bewertet__01.jpg

hg_slider2_bewertet__01.jpg

636 ms

no_img_13.png

no_img_13.png

538 ms

cprotect_slider1.png

cprotect_slider1.png

614 ms

no_img_14.png

no_img_14.png

621 ms

ISO27001.png

ISO27001.png

735 ms

icon-01_06.png

icon-01_06.png

632 ms

img-01_07.png

img-01_07.png

746 ms

no_img_03.png

no_img_03.png

720 ms

hg_slider2_server__01.jpg

hg_slider2_server__01.jpg

825 ms

icon-03_07.png

icon-03_07.png

738 ms

trs.js

trs.js

597 ms

piwik.js

piwik.js

643 ms

358 ms

669 ms

img-03_07.png

img-03_07.png

833 ms

no_img_04.png

no_img_04.png

710 ms

hg_slider2_netti__01.jpg

hg_slider2_netti__01.jpg

723 ms

arrow2.png

arrow2.png

724 ms

button-orange.gif

button-orange.gif

730 ms

aa9c5e66e8.png

aa9c5e66e8.png

743 ms

footer.gif

footer.gif

730 ms

menu-01_05_fin.png

menu-01_05_fin.png

740 ms

menu-02_05_fin.png

menu-02_05_fin.png

743 ms

menu-03_04_fin.png

menu-03_04_fin.png

748 ms

menu-04_04_fin.png

menu-04_04_fin.png

741 ms

menu-05_04_fin.png

menu-05_04_fin.png

732 ms

menu-06_04_fin.png

menu-06_04_fin.png

742 ms

all.min.css

all.min.css

743 ms

arrow.png

arrow.png

741 ms

trs.gif

trs.gif

592 ms

Accessibility Review

centron.net accessibility score

79

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.

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

Links do not have a discernible name

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

centron.net 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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

centron.net SEO score

89

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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 Centron.net 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 Centron.net 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

centron.net

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