Free Metadata Editor — View & Edit Media Tags
View, edit, and strip metadata from audio and video files — a free alternative to Mp3tag. No sign-up, no re-encoding.
Edit ID3 tags on MP3 files and metadata on M4A, FLAC, OGG, and WAV — title, artist, album, year, genre, track number, embedded cover art — all in your browser. No upload, no account, no per-file fee. A free alternative to Mp3tag and MusicBrainz Picard for one-off metadata cleanup without installing a desktop tagger.
Built and maintained by James Nicolaus
View File Info
See format, duration, bitrate, streams, and all metadata tags at a glance. Works with audio and video files.
Edit Tags
Edit title, artist, album, year, genre, and more. Add custom metadata fields. Stream copy preserves quality.
Strip Metadata
Remove all metadata tags in one click. Great for privacy — strip personal info, location data, or software tags.
100% Private
All processing happens in your browser using WebAssembly. Your files never leave your device.
Free Metadata Editor — View & Edit Media Tags Online
The Free Metadata Editor lets you view, edit, and strip metadata tags from audio and video files — directly in your browser. Edit MP3 ID3 tags, M4A atoms, MKV properties, and more. No sign-up, no uploads, no re-encoding.
Resizing the cover art before embedding? The free image converter handles batch resize and format conversion. Need to swap the audio format before re-tagging an album? Use the free audio converter first — it preserves the file structure metadata editors expect.
Features
- View file properties — See format, duration, bitrate, and all stream details (audio, video, subtitle tracks) at a glance.
- Read metadata tags — Displays all embedded tags: title, artist, album, date, genre, track number, and any custom fields the file contains.
- Edit tags — Modify existing tags or add new ones. Quick-add buttons for common tags. Uses stream copy so the audio and video data are not re-encoded.
- Strip all metadata — One-click removal of all metadata tags. Useful for privacy before sharing files publicly.
- 100% client-side — Uses ffmpeg.wasm (WebAssembly). Your files never leave your device.
How to Edit Media Metadata
- 1. Add a file — Drag and drop an audio or video file. MP3, M4A, OGG, FLAC, WAV, MP4, WebM, MKV, MOV, and AVI are supported.
- 2. Review — See file properties, streams, and all existing metadata tags.
- 3. Edit— Click "Edit Tags" to modify values, add new tags, or remove existing ones.
- 4. Save or Strip— Click "Save Tags" to write your changes, or "Strip All Metadata" to remove everything.
- 5. Download — Download the modified file. The original audio/video data is preserved exactly (stream copy).
Metadata Editor vs. Mp3tag
| Feature | Metadata Editor | Mp3tag |
|---|---|---|
| Price | Free (browser) | Free / $24.99 (Mac) |
| Platform | Any browser | Windows / Mac |
| Install required | No | Yes |
| Video support | Yes (MP4, MKV, etc.) | Audio only |
| Strip metadata | Yes — one click | Manual field clearing |
| Batch editing | One file at a time | Yes — multi-file |
| Album art | Not yet | Yes |
Tips, Mistakes & Takeaways
Tips
- →Embed cover art at 600×600 or higher — most music apps display covers at that resolution.
- →Use consistent capitalization across an album (Artist, Album, Genre) — players sort and group on these fields exactly.
- →Set the track number as 'N/Total' (e.g., 3/12) so players know the album length.
- →Save originals as a backup before bulk-editing — the tool overwrites tags in place.
Common Mistakes
- !Embedding huge cover art (5+ MB) — bloats every file unnecessarily. Resize first.
- !Mixing tag versions (ID3v1 vs ID3v2.3 vs v2.4) across an album — some players read one and not the other.
- !Editing metadata on a corrupted or DRM-protected file — the writeback fails silently in some cases.
Key Takeaways
- ✓ID3 and Vorbis-comment tagging across major audio formats, with embedded cover art support.
- ✓Browser-only — files stay on your device, never uploaded.
- ✓Tagging only — no audio re-encoding, no waveform editing.
Frequently Asked Questions
Does editing tags re-encode the audio or video?
No. The editor uses ffmpeg's stream copy mode (-c copy), which modifies only the container metadata. The audio and video data are copied byte-for-byte without re-encoding, so quality is preserved exactly.
Why should I strip metadata?
Media files can contain personal information — recording software name, GPS coordinates (in some video formats), your name in the artist field, or encoding details. Stripping metadata before sharing publicly helps protect your privacy.
Can I add album art?
Not yet — album art embedding requires writing cover images into the container, which is a more complex operation. For now, the editor handles text-based metadata tags only.