Professional Tool

Online MIDI Editor with Piano Roll, Quantize and Export

Edit MIDI online in your browser: piano roll, grid & snap, track solo/mute/visibility, tempo & quantize, instrument changes, and MIDI import/export. Everything runs locally for privacy.

Features

Piano roll editing with grid & snap (select/pencil/eraser)

Track controls: solo/mute/visibility/ghost, channel & drum kit

Tempo, quantize, velocity; per-track volume & pan

MIDI import & export; save your edits

Real-time playback and loop for audition

Local editing in browser, no upload

How to Use

1. Start or import

Create a new score or import a .mid file to begin editing.

2. Navigate piano roll

Use zoom/scroll, enable grid & snap, pick tools (select/pencil/eraser).

3. Edit notes & velocity

Add/move/delete notes, adjust velocity, change instruments if needed.

4. Manage tracks

Solo/mute/visibility/ghost; set channel/drum kit; tweak volume & pan.

5. Export & preview

Export MIDI, then preview it in the Online MIDI Player or convert to audio.

FAQ

Technical Specs & Compatibility

Web-based MIDI editor (SignalEditor) running fully in browserMIDI format: .mid import & exportEditing: piano roll, grid & snap, quantize, velocityTracks: solo/mute/visibility/ghost, channel, drum kitBrowsers: Latest Chrome/Edge/Safari