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Content design

Users who cannot see or hear well must rely on text alternatives for visual or audio content. This page describes how to make images, graphics, audio, and video accessible.

Level 1

Provide alternative text for meaningful images and visual data

Caption videos

Level 2

Give names to icons and videos

Validate captions

  • What to do

    As a content designer, you may be responsible for generating or validating the quality of captions. Autogenerated captions must be manually reviewed and corrected. Ensure captions are accurate, simple to read, synchronized, and complete from the perspective of persons who are deaf or hard-of-hearing. Captions should also go beyond spoken words to capture other meaningful audio cues, such as sounds and applause. Captions do not need to capture a speaker’s stumbles or stutters, which can be distracting. When outsourcing video development, communicate the requirements and expected quality for captions to the vendor.

    Quality captions have the following characteristics:

    • Include dialog and important audio cues necessary to understand the information
    • Show the name or title of the speaker during transitions in dialogs
    • Include punctuation, capitalization, and correct spelling
    • Display in readable-length phrases
    • Avoid covering up important visual information in the video
    • Sufficiently contrast the caption text with its background
    • Appear in synchronization with the spoken content



    Related toolkit topics

Level 3

Provide media alternatives