Tools & Wizards About Us
stadtwerke-bielefeld.de screenshot

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

stadtwerke-bielefeld.de

Stadtwerke Bielefeld - Stadtwerke Bielefeld

Page Load Speed

4.3 sec in total

First Response

658 ms

Resources Loaded

3.1 sec

Page Rendered

514 ms

stadtwerke-bielefeld.de screenshot

About Website

Visit stadtwerke-bielefeld.de now to see the best up-to-date Stadtwerke Bielefeld content for Germany and also check out these interesting facts you probably never knew about stadtwerke-bielefeld.de

Visit stadtwerke-bielefeld.de

Key Findings

We analyzed Stadtwerke-bielefeld.de page load time and found that the first response time was 658 ms and then it took 3.6 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

stadtwerke-bielefeld.de performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value5.3 s

21/100

25%

SI (Speed Index)

Value6.5 s

38/100

10%

TBT (Total Blocking Time)

Value550 ms

53/100

30%

CLS (Cumulative Layout Shift)

Value0.172

69/100

15%

TTI (Time to Interactive)

Value11.1 s

20/100

10%

Network Requests Diagram

www.stadtwerke-bielefeld.de

658 ms

merged-f045f6e2adcea70fed18437b8aa4001e-d11cedab430ad087a6b20f39c66c2e16.css

220 ms

main.css

536 ms

main.js

220 ms

default_frontend.js

227 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 70% of them (21 requests) were addressed to the original Stadtwerke-bielefeld.de, 17% (5 requests) were made to Cdn.consentmanager.net and 10% (3 requests) were made to C.delivery.consentmanager.net. The less responsive or slowest element that took the longest time to load (1 sec) relates to the external source Bestellung.stadtwerke-bielefeld.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 160.4 kB (18%)

Content Size

868.5 kB

After Optimization

708.1 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Stadtwerke-bielefeld.de main page is 868.5 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. 25% of websites need less resources to load. Images take 587.6 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 150.4 kB

  • Original 183.3 kB
  • After minification 170.5 kB
  • After compression 32.9 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 150.4 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 8.4 kB

  • Original 587.6 kB
  • After minification 579.2 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. Stadtwerke Bielefeld images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 1.6 kB

  • Original 97.6 kB
  • After minification 97.6 kB
  • After compression 96.0 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.

Requests Breakdown

Number of requests can be reduced by 4 (14%)

Requests Now

28

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Stadtwerke Bielefeld. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.stadtwerke-bielefeld.de

www.stadtwerke-bielefeld.de

658 ms

merged-f045f6e2adcea70fed18437b8aa4001e-d11cedab430ad087a6b20f39c66c2e16.css

merged-f045f6e2adcea70fed18437b8aa4001e-d11cedab430ad087a6b20f39c66c2e16.css

220 ms

main.css

main.css

536 ms

main.js

main.js

220 ms

default_frontend.js

default_frontend.js

227 ms

cmp.php

cmp.php

417 ms

cmp_en.min.js

cmp_en.min.js

216 ms

tarifberater-iframe

tarifberater-iframe

1024 ms

swb-logo.svg

swb-logo.svg

110 ms

csm_SW_NHB_23_SLIDER_ef55030e5d.png

csm_SW_NHB_23_SLIDER_ef55030e5d.png

217 ms

csm_Event_2024_Picknick_trifft_Theater__286d44499e.png

csm_Event_2024_Picknick_trifft_Theater__286d44499e.png

428 ms

csm_beratung_f3097dc132.jpg

csm_beratung_f3097dc132.jpg

324 ms

csm_swb_treuetarife_website_Slider_startseite_20230810_lv__1__fac348b5c5.jpg

csm_swb_treuetarife_website_Slider_startseite_20230810_lv__1__fac348b5c5.jpg

222 ms

csm_Website_Slider_Cub_28bc83c61e.png

csm_Website_Slider_Cub_28bc83c61e.png

430 ms

csm_SWB_Image_Webbanner-SWB-Startseite_Baeder_20240229_lv2_ad69e07f58.jpg

csm_SWB_Image_Webbanner-SWB-Startseite_Baeder_20240229_lv2_ad69e07f58.jpg

431 ms

csm_BITel_iStock-1166593074_453c3f6be5.jpg

csm_BITel_iStock-1166593074_453c3f6be5.jpg

327 ms

csm_swb_meineKlimapraemie_Motiv_Webbanner_20220125_az_84a07502a7.jpg

csm_swb_meineKlimapraemie_Motiv_Webbanner_20220125_az_84a07502a7.jpg

435 ms

csm_Beratung_Energieberatung_3cd17e3ee5.jpg

csm_Beratung_Energieberatung_3cd17e3ee5.jpg

433 ms

csm_Energiespartipps_Heizen_Energieberatung_1647e91f63.jpg

csm_Energiespartipps_Heizen_Energieberatung_1647e91f63.jpg

439 ms

csm_Picknick_trifft_Theater_Event_Bielefeld_2024_bdb6cf4c46.jpg

csm_Picknick_trifft_Theater_Event_Bielefeld_2024_bdb6cf4c46.jpg

540 ms

csm_teaser_elektromobilitaet-autoladestation_swb-istock_simonkr_v1_HM_fd3f026071.jpg

csm_teaser_elektromobilitaet-autoladestation_swb-istock_simonkr_v1_HM_fd3f026071.jpg

645 ms

csm_kundenzentrum-jahnplatz-nr-5-190221_v1_HM_924eb5c3af.jpg

csm_kundenzentrum-jahnplatz-nr-5-190221_v1_HM_924eb5c3af.jpg

856 ms

csm_Stadtwerke_Bielefeld_-_Jahnplatz_Nr._5_-_Beratung_38acf17fda.jpg

csm_Stadtwerke_Bielefeld_-_Jahnplatz_Nr._5_-_Beratung_38acf17fda.jpg

649 ms

bV8xLndfNjM2MjIucl9HRFBSLmxfZGUuZF8yNDc2MC54XzI1LnYucC50XzI0NzYwLnh0XzI1.js

bV8xLndfNjM2MjIucl9HRFBSLmxfZGUuZF8yNDc2MC54XzI1LnYucC50XzI0NzYwLnh0XzI1.js

568 ms

print.css

print.css

148 ms

recall_cookie.svg

recall_cookie.svg

28 ms

101 ms

logo1679928868x4462.gif

logo1679928868x4462.gif

22 ms

cmplogo.svg

cmplogo.svg

26 ms

195 ms

Accessibility Review

stadtwerke-bielefeld.de accessibility score

70

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

[id] attributes on active, focusable elements are not unique

ARIA

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.

Impact

Issue

High

ARIA IDs are not unique

Best Practices

stadtwerke-bielefeld.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

High

Missing source maps for large first-party JavaScript

SEO Factors

stadtwerke-bielefeld.de SEO score

77

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

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

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 Stadtwerke-bielefeld.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 Stadtwerke-bielefeld.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

stadtwerke-bielefeld.de

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