Free MIDI Editor Online
Edit midi files, arrange MIDI tracks, and fine-tune notes with our browser-based midi editor. No downloads — just open and start midi editing.
Drop a MIDI file here to get started
Supports .mid and .midi files
What is the MIDI Editor?
A browser-based tool for midi editing and arrangement
The midi editor is an online tool that lets you edit midi files, arrange MIDI tracks, and tweak every note using a piano roll. It runs entirely in your browser with zero setup.
Piano Roll View
Displays all notes on a piano roll grid for precise pitch and timing adjustments.
Multi-Track Support
Handle multiple MIDI tracks so you can layer drums, bass, and melody together.
Velocity Editing
Adjust note velocity inside the midi editor to add dynamics and expression to your parts.
Import & Export
Drag and drop to edit midi files from your computer, then export updated files when done.
Quantize Notes
Snap notes to the grid so your midi editing stays tight and on beat.
Real-Time Playback
Preview changes instantly with built-in playback and instrument sounds.
Producers
MIDI Editor for Music Producers
Fine-tune every note before export
Producers use the midi editor to polish MIDI tracks before importing into their DAW. The piano roll makes detailed note editing fast and visual.
Composers
Piano Roll for Composers
Compose and arrange without a DAW
Composers sketch ideas in the midi editor and export finished MIDI tracks. Edit midi files on any device with just a browser.
Students
MIDI Editor for Students
Learn music theory hands-on
Students load songs into the midi editor to study chords, scales, and arrangements visually. The piano roll makes learning intuitive.
Live
Quick Fixes for Live Performers
Patch MIDI tracks on the go
Live performers use the midi editor backstage to fix wrong notes in their files. Edit midi data on a laptop minutes before showtime.
How to Use the MIDI Editor
Edit MIDI tracks in four easy steps
1
Upload a File
Open the midi editor and drag in your file to start working on the piano roll.
2
Edit Notes
Click and drag notes to change pitch, timing, and length on the grid.
3
Adjust Velocity
Use the velocity lane to control how hard each note plays in your MIDI tracks.
4
Export MIDI
Download the finished midi files and import them into your DAW or synth.
Why Choose the MIDI Editor
The fastest way to edit midi online
Our midi editor gives you professional midi editing tools with zero install and zero cost.
No Software Install
Runs in your browser — works on Mac, Windows, Linux, and Chromebook with no download.
Fast Piano Roll
Renders the piano roll at 60fps for smooth, lag-free midi editing on any device.
Standard MIDI Format
Reads and writes standard .mid files compatible with every major DAW on the market.
Undo & Redo
Every change is reversible — experiment freely with your MIDI tracks and arrangements.
Keyboard Shortcuts
Speed up midi editing with hotkeys for copy, paste, select, and delete operations.
Private & Secure
Your files never leave your browser. All processing happens locally on your device.
MIDI Editor FAQ
Frequently Asked Questions
A midi editor is a tool that lets you view, edit, and arrange MIDI tracks using a piano roll interface. Ours works entirely online.
Yes. Standard .mid files exported from any DAW are supported. Import, edit, and re-export with ease.
Yes, the core features are free. Premium plans add batch midi editing and advanced quantize options.
Yes. The midi editor handles up to 16 MIDI tracks simultaneously with separate piano roll lanes.
Yes. Start with a blank canvas and draw notes directly on the piano roll to build midi files from zero.
Edit MIDI Files Right Now
Open the midi editor and start midi editing your MIDI tracks with our free piano roll — no download needed.