Automatic Testing Tools will help you get a first understanding of the accessibility of your website or web application. If you are new to accessibility, it will also help you learn more about the topic and the different issues that are occurring on the web when code is not properly written.

1. Testing Tools for
Accessibility Enhancement
Part II
Accessibility Webinar Series Part 3, 26th March
2025
Julia Undeutsch
Accessibility Specialist
Building for Everyone

2. ● Automated Testing Tools, like
○ Axe DevTools
○ Google Lighthouse
○ Accessibility Insights
○ WAVE
○ Accessibility Cloud
● Accessible Frameworks and Overlays
Agenda

3. Automated Testing
Tools
How many errors can they catch?

4. ● WAVE, WAVE (Web Accessibility Evaluation Tool)
● Google LightHouse, automatically installed in Chrome
● Accessibility Insights, Accessibility Insights for the Web
● Axe DevTools, axe DevTools
● Accessibility Cloud, https://www.accessibilitycloud.com/
● Siteimprove Accessibility Checker, Chrome Siteimprove Chrome Firefox
Siteimprove Firefox
Browser Extensions

5. Accessibility
Frameworks and
Overlays
Are they really accessible?

6. ● React Bootstrap https://react-bootstrap.netlify.app/
● Material UI https://mui.com/material-ui/getting-started/
● Razen / Blazor https://blazor.radzen.com/?theme=material3
Frameworks

7. ● European Disability Forum and International Association of
Accessibility Professionals joint statement on accessibility overlays
https://www.edf-feph.org/publications/joint-statement-on-accessibility-ove
rlays/
● Adrian Roselli is getting sued https://adrianroselli.com/?s=sued
● Be Wary of Accessibility Guarantees from Anyone
https://adrianroselli.com/2025/03/be-wary-of-accessibility-guarantees-from
-anyone.html
Accessibility Overlays

8. Next Session
April 24th, 5pm CET
Level Up Your Accessibility Game: A11y Audi
t, WCAG, and the Pokédex of A11y
Session Infos and
Material
https://gdg.community.dev/gdg-vienna/
https://www.accessibilityfirst.at/webinar-series
https://
a11ynews.substack.com/
A11Y News
Newsletter

9. Resources
●Manuel Matuzovic
Building the most inaccessible site possible with a perfect Lighthouse score
●European Commission Web Accessibility
https://digital-strategy.ec.europa.eu/en/policies/web-accessibility
●Accessibility overlays
https://digital-strategy.ec.europa.eu/en/policies/web-accessibility
●Overlay Fact Sheet https://overlayfactsheet.com/en/
●Accessibility-Overlays wissenschaftlich beleuchtet — technica11y mit Daniela
Kubesch https://www.youtube.com/live/Atc5v64gqdE

10. ● Should I use an accessibility overlay?
https://www.a11yproject.com/posts/should-i-use-an-accessibility-overlay/
● Overlay Fact Sheet: What it is and how to make it work for you
https://karlgroves.com/overlay-fact-sheet-what-it-is-and-how-to-make-it-wo
rk-for-you/
● Karl Groves on Overlays
https://karlgroves.com/category/professional/accessibility/overlays/
● Accessibility Overlays – All Sizzle, No Steak: Karl Groves
https://equalizedigital.com/accessibility-overlays-all-sizzle-no-steak-karl-gro
ves/
Accessibility Overlays

11. Resources
●Blog post by Accessibility Specialist Adrian Roselli https://adrianroselli.com/
●Leonie Watson (blind a11y tester) https://tink.uk/
●Manuel Matuzovic (a11y Specialist, focused on HTML and CSS)
https://matuzo.at/
●Scott O’Hara (a11y Specialist) https://www.scottohara.me/
●Sara Soueidan (a11y Specialist) https://www.sarasoueidan.com/
●Steve Faulkner https://html5accessibility.com/stuff/
●Paul J. Adam https://pauljadam.com/
●Scott O’Hara https://www.scottohara.me/
●Eric Eggert https://yatil.net/

12. Q&A