WEBM Metadata Remover
Delete comment tags, encoder notes, and track titles from WEBM files while keeping VP9/AV1 video and audio untouched.
Drag & drop a file here, or click to select
Max file size: 100 MB
Looking to view metadata instead? Go to the Metadata Viewer.
Why remove WEBM metadata?
WEBM containers can include comments, encoder notes, and attachments that expose tooling. Cleaning keeps streams and timing intact while removing that data.
Publish web clips cleanly
Strip comments and encoder tags before posting WEBM assets online.
Reduce attribution trails
Remove muxer and language tags that reveal origin or workflows.
Keep animations private
Share WEBM animations without embedded comments or attachments.
Secure WEBM cleaning
We scrub WEBM tags using metadata-only operations, then delete the temporary copy after processing.
Upload your WEBM
Select a WEBM clip. Uploads are encrypted and not stored after processing.
Strip WEBM tags
We remove title, comment, encoder, language, and custom tags plus attachments from the container.
Preserve VP9/AV1 streams
Video/audio, timing, and cue points stay the same—only metadata is removed.
Download & purge
Download the cleaned WEBM instantly; the temp copy is wiped right after.
What WEBM metadata do we remove?
We clear WEBM/Matroska tags that can reveal source, language, or tooling while leaving streams intact.
- Segment and track titles, comments, and description fields
- Encoder/muxer notes and application identifiers
- Language tags on tracks and chapters
- Attachments such as cover art or preview images
- Custom tag elements added by editors or pipelines
- XMP-like packets stored within WEBM tag blocks
- Timing or date fields stored as metadata
- User-defined key/value pairs saved in the container
What WebM inherits from Matroska
WebM is a Matroska subset, which means it carries the same Tags element tree as MKV — every segment, track, chapter, and attachment can hold metadata — but the web-focused pipelines that produce WebM (browser MediaRecorder, OBS, ffmpeg with libvpx, and most screen-share tools) tend to write a predictable set of fields that together uniquely identify the source. The 'writing app' field will often be 'Chrome 120' or 'obs-studio 30.0.2' with the build hash, the 'muxer' field identifies the underlying ffmpeg or libwebm version, and per-track language tags hint at the OS locale of the recording machine.
For WebMs that were re-muxed from another source (uploaded YouTube downloads, social-video re-encodes), the tag tree often still contains the original uploader's channel name, the upload date, and a backreference to the original media ID — all carried over by yt-dlp and similar tools unless explicitly stripped. Cleaning clears every Tags/Tag/SimpleTag element, removes Attachments, resets track/segment titles, and leaves the VP9 or AV1 video, Opus/Vorbis audio, and cue points unchanged.
FAQs
Will cleaning affect quality or size?
Quality stays the same. File size may drop slightly after removing metadata and attachments.
Are VP9 and AV1 streams preserved?
Yes. We do metadata-only removal; video/audio streams and timings remain intact.
Can you remove comments or titles?
Yes. We clear title, comment, encoder, and language tags from the WEBM container.
Do you remove attachments?
Yes. Any embedded cover art or attachments stored as metadata are removed.