Tools & Wizards About Us
dvg-duisburg.de screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 96

    SEO

    Google-friendlier than
    90% of websites

dvg-duisburg.de

Bus und Bahn fahren in Duisburg: DVG - Duisburger Verkehrsgesellschaft AG | DVG – Duisburger Verkehrsgesellschaft AG

Page Load Speed

8.8 sec in total

First Response

3.5 sec

Resources Loaded

5 sec

Page Rendered

350 ms

dvg-duisburg.de screenshot

About Website

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

Die Duisburger Verkehrsgesellschaft AG (DVG) bewegt in ihren Bussen und Bahnen täglich über 120.000 Fahrgäste in Duisburg und über die Stadtgrenzen hinaus.

Visit dvg-duisburg.de

Key Findings

We analyzed Dvg-duisburg.de page load time and found that the first response time was 3.5 sec and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

dvg-duisburg.de performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

67/100

10%

LCP (Largest Contentful Paint)

Value5.9 s

14/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value320 ms

76/100

30%

CLS (Cumulative Layout Shift)

Value0.022

100/100

15%

TTI (Time to Interactive)

Value5.2 s

75/100

10%

Network Requests Diagram

www.dvg-duisburg.de

3469 ms

webfont.css

202 ms

bootstrappackageicon.min.css

306 ms

global.css

411 ms

cookieOptin.css

308 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 98% of them (40 requests) were addressed to the original Dvg-duisburg.de, 2% (1 request) were made to 0. The less responsive or slowest element that took the longest time to load (3.5 sec) belongs to the original domain Dvg-duisburg.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 115.9 kB (19%)

Content Size

600.6 kB

After Optimization

484.7 kB

  • HTML
  • Images

In fact, the total size of Dvg-duisburg.de main page is 600.6 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. 40% of websites need less resources to load. Images take 489.4 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 92.9 kB

  • Original 111.2 kB
  • After minification 103.3 kB
  • After compression 18.3 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. 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 92.9 kB or 84% of the original size.

Image Optimization

-5%

Potential reduce by 23.0 kB

  • Original 489.4 kB
  • After minification 466.4 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. DVG Duisburg images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 19 (49%)

Requests Now

39

After Optimization

20

  • Images
  • JavaScript
  • CSS

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DVG Duisburg. 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 from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.dvg-duisburg.de

www.dvg-duisburg.de

3469 ms

webfont.css

webfont.css

202 ms

bootstrappackageicon.min.css

bootstrappackageicon.min.css

306 ms

global.css

global.css

411 ms

cookieOptin.css

cookieOptin.css

308 ms

cookieOptin.js

cookieOptin.js

310 ms

jquery.min.js

jquery.min.js

399 ms

popper.min.js

popper.min.js

256 ms

bootstrap.min.js

bootstrap.min.js

455 ms

photoswipe.umd.min.js

photoswipe.umd.min.js

420 ms

photoswipe-lightbox.umd.min.js

photoswipe-lightbox.umd.min.js

410 ms

photoswipe-dynamic-caption-plugin.umd.min.js

photoswipe-dynamic-caption-plugin.umd.min.js

422 ms

bootstrap.accordion.min.js

bootstrap.accordion.min.js

456 ms

bootstrap.popover.min.js

bootstrap.popover.min.js

456 ms

bootstrap.stickyheader.min.js

bootstrap.stickyheader.min.js

457 ms

bootstrap.smoothscroll.min.js

bootstrap.smoothscroll.min.js

457 ms

bootstrap.navbar.min.js

bootstrap.navbar.min.js

502 ms

cookieconsent.min.js

cookieconsent.min.js

542 ms

bootstrap.cookieconsent.min.js

bootstrap.cookieconsent.min.js

544 ms

production.min.js

production.min.js

654 ms

default_frontend.js

default_frontend.js

544 ms

data

data

85 ms

symbol-defs.svg

symbol-defs.svg

199 ms

DVG_Bahnfahrerin_Stellenangebot.jpg

DVG_Bahnfahrerin_Stellenangebot.jpg

618 ms

csm_DVG_DeutschlandTicket_Teaser_6dc2a5c4ad.png

csm_DVG_DeutschlandTicket_Teaser_6dc2a5c4ad.png

585 ms

DVG_Service_Slider_Hintergrund.jpg

DVG_Service_Slider_Hintergrund.jpg

445 ms

DVG_Icon_Barrierefreiheit.png

DVG_Icon_Barrierefreiheit.png

437 ms

DVG_Icon_Fundbuero.png

DVG_Icon_Fundbuero.png

437 ms

DVG_Icon_Leihfahrrad.png

DVG_Icon_Leihfahrrad.png

446 ms

rundum.png

rundum.png

446 ms

DVG_Icon_Puenktlichkeitsversprechen.png

DVG_Icon_Puenktlichkeitsversprechen.png

446 ms

background-stripes.svg

background-stripes.svg

483 ms

csm_DVG_Wasserstoffbusse_Teaser_2630d282dd.jpg

csm_DVG_Wasserstoffbusse_Teaser_2630d282dd.jpg

493 ms

csm_DVG_NeueBahnen_Teaser_bc92364b13.jpg

csm_DVG_NeueBahnen_Teaser_bc92364b13.jpg

493 ms

csm_DVG_Geschaeftsbericht_Teaser2_a707820a0f.jpg

csm_DVG_Geschaeftsbericht_Teaser2_a707820a0f.jpg

596 ms

csm_DVG_Elektrobusse_Teaser_a1b05c71ea.jpg

csm_DVG_Elektrobusse_Teaser_a1b05c71ea.jpg

589 ms

csm_DVG_Pestel_Studie_Teaser_e705bc5e89.jpg

csm_DVG_Pestel_Studie_Teaser_e705bc5e89.jpg

601 ms

csm_DVG_Investitionen_2020_Teaser_2412dc5df4.jpg

csm_DVG_Investitionen_2020_Teaser_2412dc5df4.jpg

698 ms

footer-bus-left.svg

footer-bus-left.svg

685 ms

footer-bus-right.svg

footer-bus-right.svg

694 ms

print.css

print.css

105 ms

Accessibility Review

dvg-duisburg.de accessibility score

68

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

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[aria-*] attributes do not have valid values

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

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

High

Heading elements are not in a sequentially-descending order

Best Practices

dvg-duisburg.de best practices score

75

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

Browser errors were logged to the console

SEO Factors

dvg-duisburg.de SEO score

96

Search Engine Optimization Advices

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 Dvg-duisburg.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 Dvg-duisburg.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

dvg-duisburg.de

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