Tools & Wizards About Us
swd-ag.de screenshot

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

swd-ag.de

Strom und Gas für Düsseldorf und NRW | Stadtwerke Düsseldorf

Page Load Speed

3.2 sec in total

First Response

292 ms

Resources Loaded

2.4 sec

Page Rendered

453 ms

swd-ag.de screenshot

About Website

Welcome to swd-ag.de homepage info - get ready to check Swd Ag best content for Germany right away, or after learning these important things about swd-ag.de

Ob Strom, Erdgas, Wasser, Fernwärme oder Entsorgung: Die Stadtwerke Düsseldorf sind Ihr Energiedienstleister in Düsseldorf und der Region.

Visit swd-ag.de

Key Findings

We analyzed Swd-ag.de page load time and found that the first response time was 292 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

swd-ag.de performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.9 s

4/100

10%

LCP (Largest Contentful Paint)

Value15.9 s

0/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value2,060 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value15.8 s

6/100

10%

Network Requests Diagram

swd-ag.de

292 ms

www.swd-ag.de

615 ms

api_dynamic.js

420 ms

api_static.js

428 ms

gigya.js

68 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 80% of them (45 requests) were addressed to the original Swd-ag.de, 5% (3 requests) were made to and 4% (2 requests) were made to Cdn-eu.dynamicyield.com. The less responsive or slowest element that took the longest time to load (889 ms) belongs to the original domain Swd-ag.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 138.2 kB (6%)

Content Size

2.2 MB

After Optimization

2.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Swd-ag.de main page is 2.2 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. 65% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 121.9 kB

  • Original 148.5 kB
  • After minification 147.3 kB
  • After compression 26.7 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 121.9 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 15.4 kB

  • Original 1.5 MB
  • After minification 1.5 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. Swd Ag images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 822 B

  • Original 381.3 kB
  • After minification 381.3 kB
  • After compression 380.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 18 B

  • Original 91.1 kB
  • After minification 91.1 kB
  • After compression 91.1 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. Swd-ag.de has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 15 (32%)

Requests Now

47

After Optimization

32

  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Swd Ag. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

swd-ag.de

swd-ag.de

292 ms

www.swd-ag.de

www.swd-ag.de

615 ms

api_dynamic.js

api_dynamic.js

420 ms

api_static.js

api_static.js

428 ms

gigya.js

gigya.js

68 ms

main_css.css

main_css.css

202 ms

nonvueapp__css.css

nonvueapp__css.css

503 ms

modernizr_262_respond_110min.js

modernizr_262_respond_110min.js

303 ms

jquery_1_12_4_js_min.js

jquery_1_12_4_js_min.js

407 ms

integration.js

integration.js

310 ms

jquery-migrate-1.4.1.min.js

jquery-migrate-1.4.1.min.js

212 ms

swiper.jquery.min.js

swiper.jquery.min.js

213 ms

main_js.js

main_js.js

478 ms

nonvueapp__js.js

nonvueapp__js.js

477 ms

chunk-vendors__js.js

chunk-vendors__js.js

621 ms

app__js.js

app__js.js

477 ms

gtm.js

gtm.js

817 ms

gtm.js

gtm.js

110 ms

swd-logo-2020.svg

swd-logo-2020.svg

151 ms

bogenschiessen-kids-in-action_volle_breite.jpg

bogenschiessen-kids-in-action_volle_breite.jpg

301 ms

trinkbrunnen_volle_breite.jpg

trinkbrunnen_volle_breite.jpg

300 ms

selfservice-buehne_volle_breite.jpg

selfservice-buehne_volle_breite.jpg

220 ms

top-lokalversorger-footer.png

top-lokalversorger-footer.png

150 ms

bestchoice_gutschein_360x180.jpg

bestchoice_gutschein_360x180.jpg

597 ms

fassade_zwei_drittel.jpg

fassade_zwei_drittel.jpg

221 ms

athrium_zwei_drittel.jpg

athrium_zwei_drittel.jpg

269 ms

vergruenung-header-2_volle_breite.jpg

vergruenung-header-2_volle_breite.jpg

402 ms

energiespartipps.jpg

energiespartipps.jpg

505 ms

energiekosten.jpg

energiekosten.jpg

375 ms

duesselstrom_direkt_pro_1.jpg

duesselstrom_direkt_pro_1.jpg

498 ms

strom-teaser_multiteaser.jpg

strom-teaser_multiteaser.jpg

403 ms

erdgas-teaser_multiteaser.jpg

erdgas-teaser_multiteaser.jpg

479 ms

wasser-teaser_multiteaser.jpg

wasser-teaser_multiteaser.jpg

505 ms

heizen-waerme-teaser_multiteaser.jpg

heizen-waerme-teaser_multiteaser.jpg

507 ms

kontakt-teaser_multiteaser.jpg

kontakt-teaser_multiteaser.jpg

581 ms

kundenservice-teaser_multiteaser.jpg

kundenservice-teaser_multiteaser.jpg

600 ms

zukunftsviertel-teaser_multiteaser.jpg

zukunftsviertel-teaser_multiteaser.jpg

608 ms

magazin-teaser_multiteaser.jpg

magazin-teaser_multiteaser.jpg

607 ms

icon-instagram.svg

icon-instagram.svg

609 ms

icon_x.svg

icon_x.svg

684 ms

icon-youtube.svg

icon-youtube.svg

700 ms

icon-facebook.svg

icon-facebook.svg

701 ms

icon-xing.svg

icon-xing.svg

711 ms

icon-linkedin.svg

icon-linkedin.svg

710 ms

tuev_siegel_service_tested.png

tuev_siegel_service_tested.png

713 ms

klimapakt-aktionslogo.png

klimapakt-aktionslogo.png

889 ms

univiaforswdw05-regular-woff.woff

univiaforswdw05-regular-woff.woff

808 ms

univiaforswdw05-bold-woff.woff

univiaforswdw05-bold-woff.woff

809 ms

kg+YO+T89EV6oAAAAeJxjYGKAAC4G7ICFkYmRmZGFkZWBKdOAKdOQKdOIgQEAEAkB9wAAAA==

kg+YO+T89EV6oAAAAeJxjYGKAAC4G7ICFkYmRmZGFkZWBKdOAKdOQKdOIgQEAEAkB9wAAAA==

73 ms

kg+YO+T89EV6oAAAAeJxjYGKAAC4G7ICFkYmRmZGFkZWBKdOAKdOQKdOIgQEAEAkB9wAAAA==

kg+YO+T89EV6oAAAAeJxjYGKAAC4G7ICFkYmRmZGFkZWBKdOAKdOQKdOIgQEAEAkB9wAAAA==

6 ms

univiaforswdw05-medium-woff.woff

univiaforswdw05-medium-woff.woff

742 ms

An38eoN08gUsSncUif7LLRnef6utK1SU6hJMD5bC11oGzq9Ueujqg7J1LlYxdbkas6uzjKjSmt2OnLB1rlyNhrF4geRyZEigkGBuKkOS2gk2CNDCHvVvdQrpi0q+rVWmCDA+Cq1YKpokiGVxobJNY6sFQ48bUrXMa34Ws7kpLnMat4kIyv+77q3oxPRD7BtpkrMMOITX+SD5g75Pz0RXqgAAAB4nGNgYoAALgbsgImRiZGZgSnTgIEBAARtALEA

An38eoN08gUsSncUif7LLRnef6utK1SU6hJMD5bC11oGzq9Ueujqg7J1LlYxdbkas6uzjKjSmt2OnLB1rlyNhrF4geRyZEigkGBuKkOS2gk2CNDCHvVvdQrpi0q+rVWmCDA+Cq1YKpokiGVxobJNY6sFQ48bUrXMa34Ws7kpLnMat4kIyv+77q3oxPRD7BtpkrMMOITX+SD5g75Pz0RXqgAAAB4nGNgYoAALgbsgImRiZGZgSnTgIEBAARtALEA

6 ms

web-vitals.iife.js

web-vitals.iife.js

63 ms

gtmext.min.js

gtmext.min.js

197 ms

web-vitals.iife.js

web-vitals.iife.js

13 ms

b2b__basicsupply__cal__cancellation__card__cccorderconfirmation__detail__detailgates__detailswd__es__a14ab0fe__css.css

b2b__basicsupply__cal__cancellation__card__cccorderconfirmation__detail__detailgates__detailswd__es__a14ab0fe__css.css

103 ms

Accessibility Review

swd-ag.de accessibility score

83

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

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.

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

swd-ag.de best practices score

83

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

Missing source maps for large first-party JavaScript

SEO Factors

swd-ag.de SEO score

93

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

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 Swd-ag.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 Swd-ag.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

swd-ag.de

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