Google has posted a video about ChromeVox, the company’s screen reader Chrome extension.

“Unlike most accessibility software, it is built using only web technologies like HTML5, CSS and Javascript. ChromeVox was designed from the start to enable unprecedented access to modern web apps, including those that utilize W3C ARIA (Access to Rich Internet Applications) to provide a rich, desktop-like experience,” Google says of ChromeVox. “This enables visually impaired users to experience the power of web applications while also giving developers a way to verify the accessibility of their web applications.”

The video covers set-up, using ChromeVox to listen to your web app, common pitfalls for web accessibility (and how to fix them), and how Google tests ChromeVox code.