W3C WebVTT: The Web Video Text Tracks Format

{
  "checked_at": "2026-10-17T00:00:00.000Z",
  "usefulness": "Specification for the WebVTT cue-based text track format used with HTML5 video, covering syntax, parsing, regions, CSS hooks and the VTTCue scripting API. The simplest widely supported subtitle format for web delivery.",
  "source_type": "documentation",
  "availability": "available",
  "source_owner": "W3C Timed Text Working Group",
  "next_check_at": "2026-10-24T00:00:00.000Z",
  "known_limitations": [
    "Still a Candidate Recommendation Draft, not a final Recommendation, as of the page date."
  ]
}