Techniques for WCAG 2.0

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G93: Providing open (always visible) captions


Any synchronized media technology, even ones that do not support closed captions.

This technique relates to:


The objective of this technique is to provide a way for people who are deaf or otherwise have trouble hearing the dialogue in audio visual material to be able to view the material. With this technique all of the dialogue and important sounds are embedded as text in the video track. As a result they are always visible and no special support for captioning is required by the user agent.

NOTE: Captions should not be confused with subtitles. Subtitles provide text of only the dialogue and do not include important sounds.



No resources available for this technique.



  1. Watch the synchronized media with closed captioning turned off.

  2. Check that captions (of all dialogue and important sounds) are visible.

Expected Results

If this is a sufficient technique for a success criterion, failing this test procedure does not necessarily mean that the success criterion has not been satisfied in some other way, only that this technique has not been successfully implemented and can not be used to claim conformance.