WORK ORDER Nº 0009 · BAY 9

BWF/ID3 Tag Fixer

Tag Fixer shows the metadata of many MP3 and WAV files in a spreadsheet-style table. Edit a cell or set one value for all checked rows, then save: every file is backed up first and checked after writing, and the last batch can be restored.

What it does

Drop MP3 and WAV files or folders, edit the metadata like in a spreadsheet and save. Before a file is touched it is copied, and after writing the result is checked.

  • WAV: BWF bext chunk. Description, Originator, Originator reference, date and time, checked against the EBU Tech 3285 specification (ASCII only, real dates). Loudness values, UMID and coding history are kept untouched.
  • MP3: ID3 tags. Title, artist, album, year, track, genre and comment of ID3v2.3 and v2.4 tags. Pictures, private and unknown frames are copied byte for byte.
  • Edit like a spreadsheet. Type in cells, move with Enter and the arrow keys, set a value for all checked rows with one button. Edited cells are highlighted, invalid ones turn red.
  • Backup before every change. Each original is copied (with its modification time) to a backup folder you choose; the free space is checked first.
  • Checked after writing. Every file is read back and compared with what you asked for; if anything fails the original is put back automatically.
  • Restore. One click restores the last batch, leaving alone files edited again since.

Where it helps

For libraries whose files carry wrong or missing metadata: a recorder that wrote an old date, files without a bext chunk, MP3s with the artist in the title field. Useful before importing files into an automation system. Try it on copies first: it is not a certified tool.

Screenshots

WAV tab: bext fields in an editable table, with an invalid date flagged
WAV tab: bext fields in an editable table, with an invalid date flagged
MP3 tab: ID3 tags with the edited cells highlighted
MP3 tab: ID3 tags with the edited cells highlighted
Save confirmation with the changes and the backup folder
Save confirmation with the changes and the backup folder

Quick start

  1. Drop MP3 and WAV files or folders; each type goes to its own tab.
  2. Edit the cells, or type a value in the green row and press ⇣ to set it for all checked rows.
  3. Press Save, check the list of changes and the backup folder, confirm. “Restore last batch” undoes it.

First launch

The apps are free and not code-signed, so your system shows a warning the first time.

Windows
SmartScreen may say “Windows protected your PC”: click More info, then Run anyway.
macOS
Drag the app to Applications. If macOS blocks it, open System Settings → Privacy & Security and press Open Anyway.
Linux
Make the AppImage executable (chmod +x) and run it. Some distributions also need libfuse2.
Check the file
Compare the SHA-256 of what you downloaded with the one in the specs.
shasum -a 256 <file> · Get-FileHash <file> -Algorithm SHA256

Changelog

  • 26.10.1 · 2026-10-01 · First public release.