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Standard or regulation

WebVTT: The Web Video Text Tracks Format

W3C Timed Text Working Group, W3C, 2026

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Read on October 16, 2026

What it is
The W3C specification of WebVTT, the plain-text format browsers use for captions, subtitles and other timed text tracks.
How much weight it carries
The defining specification, so authoritative for the format. It is a Candidate Recommendation Draft and may change in detail.
WebVTT: The Web Video Text Tracks Format | Yap