How to embed YouTube videos for optimum accessibility.

...all you need to do is add an extra word – highlighted in red - to your existing search code and your site will able to accept voice based input.

A quick tutorial on how to provide alt text for different sorts of images in such a way that people using assistive technologies will be able to understand the purpose of the image.
Video, with transcript included.

An easy way for anyone to add subtitles, captions, or translate nearly any video on the web.