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extension

.webm

The .webm file extension identifies WebM files.

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What this identifier means

Files ending in .webm are WebM: An open, royalty-free container built for HTML5 video, pairing VP8, VP9 or AV1 video with Vorbis or Opus audio.

.webm scores

Deterministic scores calculated from the structured facts above. Identical facts always produce identical scores.

Overall score

83/100

  • Archiving score

    100
    • it is a current, actively maintained format
    • it is actively maintained and current

    Confidence 36% · evidence coverage 56%

  • Longevity score

    89
    • it is actively maintained and current
    • it is a current, actively maintained format
    • it occupies a niche corner of the ecosystem

    Confidence 38% · evidence coverage 75%

Related to .webm

File extensions

Data quality

Every claim on this page is classified as a verified fact, a derived fact or an assumption.

Overall confidence
90%
Verification status
verified
Last reviewed
2026-08-03
Verified facts
1

1 classified claim backed by 1 source.

Sources and review status

Review status: verified · confidence 90%

Last reviewed 2026-08-03 (revision 1).