Accessibility Inspector – Firefox Developer Tools | MDN

Accessibility Inspector

The Accessibility Inspector provides a means to access important information exposed to assistive technologies on the current page via the accessibility tree, allowing you to check what’s missing or otherwise needs attention. This article takes you through the main features of the Accessibility Inspector and how to use it.

A (very) brief guide to accessibility

Accessibility is the practice of making your websites usable by as many people as possible. This means trying your best to not lock anyone out of accessing information because of any disability they may have, or any other personal circumstances such as the device they are using, the speed of their network connection, or their geographic location or locale. You can find more extensive information in the Accessibility section of MDN Web Docs.

Here we are mainly talking about exposing information to people with visual disabilities — this is done via the accessibility APIs available inside web browsers, which expose information on what roles the different elements on your page play (e.g., are they just text, or are they buttons, links, form elements, etc.?).

Semantic DOM elements have roles assigned to them by default that hint at what their purpose is. Sometimes, however, you need to [...]

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