ID3 tag editor
Drop an MP3, fill in any tags you want to set, then download.
About this tool
Read and edit the ID3 metadata tags embedded in MP3 files - title, artist, album, year, genre, track number and comment. Essential for organizing a music library, releasing your own tracks, or fixing mislabeled downloads.
Privvert reads existing ID3v2 tags from the file you drop in, lets you edit each field, and writes the file back out with updated tags. The audio bytes themselves are untouched - only the tag header changes - so there's no quality loss and the operation is instant.
ID3v2 lives in a header block at the very start of an MP3 file. Privvert reads the existing frames (TIT2 for title, TPE1 for artist, TALB for album, and so on), exposes them as form fields, then rewrites the header with your edits and copies the unchanged audio frames straight through. Because the audio data is byte-identical, the operation is effectively instant even on hour-long files.
Features
- Edit title, artist, album, album artist, year, genre, track number, comment
- Reads existing ID3v2 tags so you can see what's already there
- Writes ID3v2.3 tags (compatible with iTunes, foobar2000, every major player)
- Lossless - audio bytes are not modified
- 100% browser-side - your music files stay on your device
- Free, no watermark, no signup
How to use it
- Drop in an MP3 file.
- Edit the tag fields shown in the form.
- Click Save.
- Download the re-tagged MP3.
Everything happens inside your browser using JavaScript and WebAssembly. Your files are never uploaded to a server, never stored, and never seen by us.
Frequently asked questions
Cover art editing is on the roadmap. For now this tool covers text frames only - title, artist, album, year, genre, track and comment.
No. Only the metadata header is rewritten; the encoded audio frames are copied byte-for-byte.
This tool focuses on MP3 / ID3. Other formats use different tag standards (Vorbis comments, MP4 atoms) and need their own editor.
Many sources (especially YouTube rips) leave ID3 fields empty or fill them with the uploader's username. A quick edit makes your library look right in iTunes/Plex/Roon.
iTunes caches the metadata it read when the file was first imported. After re-tagging, right-click the track and pick 'Get Info' (or remove and re-add it) to force iTunes to re-read the file's tags.
Yes, sometimes. Tags can include the device or software that created the file, sync IDs, or comments left by ripping software. If you are sharing a recording publicly, glance through the comment and 'encoded by' fields. See the metadata article for the broader picture across file types.