Audio description
When a video has stretches where information is shown but not narrated, people who can’t see have no way to access the information.
Category: Multimedia
How to: Screen readers
How to activate a screen reader on your computer, phone or tablet, plus our favorite screen reader cheat sheet.
Captions & Transcripts (prerecorded)
Make sure your video has text alternatives for people who can't hear it's spoken audio and other sound.