Tools & Wizards About Us
dvgw.de screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

dvgw.de

DVGW e.V.: Startseite - DVGW Deutscher Verein des Gas- und Wasserfaches

Page Load Speed

2.4 sec in total

First Response

168 ms

Resources Loaded

1.8 sec

Page Rendered

384 ms

dvgw.de screenshot

About Website

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

Der DVGW hat das Ziel, Grundlagen für eine zuverlässige, technisch einwandfreie und sichere Gas- und Wasserversorgung zu liefern. Er ist ein unabhängiger und neutraler Verein.

Visit dvgw.de

Key Findings

We analyzed Dvgw.de page load time and found that the first response time was 168 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

dvgw.de performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value10.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value19.8 s

0/100

25%

SI (Speed Index)

Value11.6 s

4/100

10%

TBT (Total Blocking Time)

Value3,390 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value21.3 s

1/100

10%

Network Requests Diagram

dvgw.de

168 ms

www.dvgw.de

703 ms

bb-manager.js

20 ms

Hyphenopoly_Loader.js

259 ms

merged-d0e6233f6b3b4ad74a0e0bf98a30913b.css

904 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 89% of them (34 requests) were addressed to the original Dvgw.de, 3% (1 request) were made to 2badvice-cdn.azureedge.net and 3% (1 request) were made to Wurfl.io. The less responsive or slowest element that took the longest time to load (934 ms) belongs to the original domain Dvgw.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 992.6 kB (27%)

Content Size

3.7 MB

After Optimization

2.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dvgw.de main page is 3.7 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. 35% of websites need less resources to load. Images take 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 185.7 kB

  • Original 211.3 kB
  • After minification 210.7 kB
  • After compression 25.7 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 185.7 kB or 88% of the original size.

Image Optimization

-0%

Potential reduce by 2.3 kB

  • Original 2.4 MB
  • After minification 2.4 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. DVGW images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 414.5 kB

  • Original 611.4 kB
  • After minification 611.4 kB
  • After compression 196.8 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 414.5 kB or 68% of the original size.

CSS Optimization

-82%

Potential reduce by 390.1 kB

  • Original 473.5 kB
  • After minification 467.3 kB
  • After compression 83.4 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. Dvgw.de needs all CSS files to be minified and compressed as it can save up to 390.1 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (18%)

Requests Now

33

After Optimization

27

  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DVGW. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

dvgw.de

dvgw.de

168 ms

www.dvgw.de

www.dvgw.de

703 ms

bb-manager.js

bb-manager.js

20 ms

Hyphenopoly_Loader.js

Hyphenopoly_Loader.js

259 ms

merged-d0e6233f6b3b4ad74a0e0bf98a30913b.css

merged-d0e6233f6b3b4ad74a0e0bf98a30913b.css

904 ms

merged-19f532dac9413fa2865f47fcd513ccb9.js

merged-19f532dac9413fa2865f47fcd513ccb9.js

668 ms

wurfl.js

wurfl.js

77 ms

e.js

e.js

536 ms

bb-config.js

bb-config.js

488 ms

svgmap.svg

svgmap.svg

244 ms

x-small.svg

x-small.svg

250 ms

DVGW-Logo.png

DVGW-Logo.png

305 ms

X.svg

X.svg

299 ms

zoom_orange.svg

zoom_orange.svg

324 ms

csm_buehne-AdobeStock_211357429-fotografci_804a215327.jpg

csm_buehne-AdobeStock_211357429-fotografci_804a215327.jpg

775 ms

csm_dvgw-ifat-2024-banner_9e1bd9d057.jpg

csm_dvgw-ifat-2024-banner_9e1bd9d057.jpg

566 ms

csm_mockup-pc-person-AdobeStock_358648159-Rymden_bf0e7c8a9d.jpg

csm_mockup-pc-person-AdobeStock_358648159-Rymden_bf0e7c8a9d.jpg

492 ms

csm_banner-vorstellung-roadmap2030_d8d4dce752.jpg

csm_banner-vorstellung-roadmap2030_d8d4dce752.jpg

751 ms

csm_AdobeStock_644093913-Yellow-Boat_858a7752ee.jpg

csm_AdobeStock_644093913-Yellow-Boat_858a7752ee.jpg

662 ms

quick_icons.svg

quick_icons.svg

647 ms

waswirtun_regelsetzung_normung.svg

waswirtun_regelsetzung_normung.svg

664 ms

waswirtun_forschung_entwicklung.svg

waswirtun_forschung_entwicklung.svg

728 ms

waswirtun_pruefung.svg

waswirtun_pruefung.svg

743 ms

waswirtun_bildung.svg

waswirtun_bildung.svg

747 ms

waswirtun_wissenstransfer.svg

waswirtun_wissenstransfer.svg

808 ms

waswirtun_qualitaetsmanagement.svg

waswirtun_qualitaetsmanagement.svg

837 ms

waswirtun_arbeitsschutz.svg

waswirtun_arbeitsschutz.svg

839 ms

waswirtun_itdienstleistungen.svg

waswirtun_itdienstleistungen.svg

840 ms

waswirtun_technische_beratung.svg

waswirtun_technische_beratung.svg

856 ms

csm_blank_6ea39e7c91.gif

csm_blank_6ea39e7c91.gif

934 ms

csm_veranstaltungsheader-berufliche-bildung_cb03ea9747.jpg

csm_veranstaltungsheader-berufliche-bildung_cb03ea9747.jpg

859 ms

csm_dvgw_logo_bb_5743341450.png

csm_dvgw_logo_bb_5743341450.png

859 ms

csm_veranstaltungsheader-kongress_c821b3918e.jpg

csm_veranstaltungsheader-kongress_c821b3918e.jpg

864 ms

dvgw_logo_kongress.svg

dvgw_logo_kongress.svg

859 ms

d9c842f8-b37a-414f-be86-97ea9c61d3d7.woff

d9c842f8-b37a-414f-be86-97ea9c61d3d7.woff

81 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

90 ms

4fcb0cc0-649b-43aa-b5ec-4b51a7d7c7b7.woff

4fcb0cc0-649b-43aa-b5ec-4b51a7d7c7b7.woff

91 ms

Hyphenopoly_Loader.js

Hyphenopoly_Loader.js

81 ms

Accessibility Review

dvgw.de accessibility score

89

Accessibility Issues

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-*] attributes do not match their roles

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

Links do not have a discernible name

Best Practices

dvgw.de best practices score

67

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

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

dvgw.de SEO score

91

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 Dvgw.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 Dvgw.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

dvgw.de

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