ID3PO
Free, open-source MP3 tag editor for large libraries
Library
- Scan and browse 50,000+ MP3 files with virtual scrolling
- SQLite cache — instant re-opens on large libraries
- Auto-detects file changes on disk (mtime + size)
- 24 columns of ID3 and filesystem metadata
- Sort, search, and filter across all fields
- Stats panel with missing-field counts, top genres, and bitrates
Editing
- Inline cell editing — double-click any cell to edit
- Track details — right-click for all ID3 tags and album art
- 15 writable ID3 fields (artist, title, album, BPM, key, genre, etc.)
- Action Plans — stack Find/Replace, If/Then, Rename, and more
- Wildcards with backreferences in Find & Replace
- Unpack Compilation — split “Various Artists” tracks
- Normalize Title — auto-clean title patterns
- Batch file renaming from %fieldname% templates
- Live preview counts per action before committing
- Recipes — save and reuse action plans
Safety
- Full undo history for every tag write and rename (Ctrl+Z)
- Frame-preserving writes — Serato, rekordbox, Traktor, Engine DJ metadata untouched
- Auto-rollback on partial write failures
- Hard-stop on excessive failures with user confirmation
Extras
- Built-in audio player with album art
- Duplicate finder — scan, compare, and trash duplicates
- Bug and crash reporting via GitHub Issues
- Optional anonymous analytics (opt-in, fully open-source)
- Fully offline — no internet connection required
Built For
- DJs managing large Serato, rekordbox, or Traktor collections
- Fixing inconsistent tags across thousands of files
- Batch operations that other tools can't chain together
- Anyone who wants a fast, keyboard-first tag editor with no cloud dependency
Windows SmartScreen: The installer is unsigned. Windows will
show a SmartScreen warning when you run it. Click "More info" then "Run anyway."
The source code is fully open for inspection.
Stack
- Electron + React + Vite
- music-metadata (read) + node-id3 (write)
- SQLite cache via better-sqlite3
- MIT License — free and open source