Content, structure and relationships can be programmatically determined.
All users benefit when your website structure is logical and each section of content has a clear relationship with the content around it. Visual cues like headings, bullet points, line breaks, tables, bolding, underlining links and other formatting choices help users understand the content.
Assistive technology often relies on

1.3.1 – Info and Relationships (Level A)Read more

Provide audio description or text transcript for videos with sound.

Users who are blind or visually impaired need alternatives for video content.

Adding an audio description track or text transcript helps more users enjoy your content. These both help visually impaired users when the video’s regular soundtrack doesn’t convey all the information – for example, because the

1.2.3 – Audio Description or Media Alternative (Pre-recorded) (Level A)Read more

Provide captions for videos with audio.
Introduction
Users with hearing impairments may not be able to perceive the sound on a video. Presenting the video’s content in captions means these users can fully enjoy the content.
How to Pass

Add captions to all videos with sound.
Caption all spoken word.
Identify speakers.
Caption non-speech information (such as sound effects).

Exceptions
You don’t need to

1.2.2 – Captions (Pre-recorded) (Level A)Read more

Provide an alternative to video-only and audio-only content.
Introduction
Users who have difficulty with hearing and/or vision may need assistance with audio-only or video-only content, such as an audio file, embedded podcast or silent film.
As the popularity of podcasting continues to grow, making these accessible is an important part of a presenters job –  in conjunction with

1.2.1 – Audio-only and Video-only (Pre-recorded) (Level A)Read more

Provide text alternatives for non-text content that serves the same purpose.
Introduction
Users who cannot see images, hear audio or perceive video benefit from having text alternatives in their place. These can be read by the user or voiced by assistive technology.

Text alternatives must therefore provide the same information as the non-text content.
How to Pass Non-text Content

1.1.1 – Non-text Content (Level A)Read more