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.
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.
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 |
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.