Browser MIDI editor for when the note structure is worth fixing, not just previewing
Use this page when a MIDI file already has enough musical value that note-level edits matter. Tighten timing, rewrite melodies, adjust velocities, change arrangement ideas, and export a cleaner structure without leaving the browser.
Edit directly in browser
Open the piano roll and keep only the MIDI ideas that deserve cleanup
This embedded editor is the place to inspect notes, remove obvious mistakes, reshape rhythm, and export a cleaner MIDI file. It is most useful after you already have a structure worth refining, whether it came from MIDI Generator, a downloaded file, or your own draft.
Desktop gives the best editing experience. Your work stays in the browser unless you export the MIDI file yourself.
Initializing...
Powerful Features for Music Creation
Everything you need to compose, arrange, and produce professional MIDI music in one intuitive interface.
Multi-Track Piano Roll
Edit multiple instrument tracks simultaneously with our intuitive piano roll interface. Visualize your entire arrangement and make precise adjustments to any note.
Velocity & Expression Control
Fine-tune the dynamics of your music with comprehensive velocity editing. Add pitch bend, modulation, and expression controllers for realistic performances.
Real-Time Playback
Hear your changes instantly with built-in SoundFont support. Preview your compositions with high-quality instrument sounds without leaving the browser.
MIDI Import & Export
Import existing MIDI files for editing or start from scratch. Export your finished compositions as standard MIDI files compatible with any DAW.
Tempo & Time Signature
Set custom tempos and time signatures for your projects. Create complex arrangements with tempo changes and varying meters throughout your composition.
Browser-Based & Free
No downloads, no installations, no subscriptions. Access our full-featured MIDI editor from any device with a modern web browser.
How to Use the MIDI Editor
Get started in seconds with our intuitive workflow.
Open or Create
Start with a blank project or import an existing MIDI file. The editor loads instantly in your browser.
Edit & Arrange
Use the piano roll to add, move, and resize notes. Adjust velocity and add expression controllers.
Preview & Refine
Play back your composition in real-time with built-in instruments. Make adjustments until perfect.
Export & Share
Download your finished composition as a MIDI file. Import it into your DAW or share directly.
Perfect for Every Music Creator
Whether you're a beginner learning music theory or a professional composer, our MIDI editor adapts to your workflow.
Songwriting & Composition
Sketch out melodies, build chord progressions, and arrange full compositions. The piano roll interface makes it easy to experiment with musical ideas and develop them into complete songs. Perfect for singer-songwriters, pop producers, and anyone looking to bring their musical ideas to life.
Film & Game Scoring
Create dynamic soundtracks with precise control over timing and expression. Support for complex time signatures and tempo changes makes it ideal for scoring to picture. Compose orchestral arrangements, ambient soundscapes, and dramatic cues for your visual projects.
Music Education
Visualize music theory concepts in action. Students and teachers can explore intervals, chords, scales, and rhythm patterns in an interactive environment. See how notes relate to each other on the piano roll and understand musical structure through hands-on experimentation.
Beat Making & Production
Program drums, basslines, and melodic patterns with precision. Quantize notes to the grid or add swing for that perfect groove. Layer multiple instruments, create complex rhythms, and build professional-quality beats for hip-hop, electronic, and pop music.
Live Performance Prep
Prepare backing tracks and sequences for live shows. Create click tracks, program synthesizer parts, and arrange songs for stage performance. Export MIDI files to trigger hardware synths and samplers during your live sets.
Remix & Arrangement
Import existing MIDI files and rearrange them into new compositions. Change keys, swap instruments, adjust tempos, and create entirely new versions of songs. Perfect for DJs, remix artists, and cover musicians.
Why Choose Our Online MIDI Editor?
See how our browser-based editor compares to traditional desktop software.
| Feature | Our Editor | Desktop DAWs |
|---|---|---|
| No Installation Required | No | |
| Works on Any Device | Limited | |
| Free to Use | $$$ | |
| Instant Access | Setup Required | |
| Auto-Save to Browser | Manual Save | |
| Cross-Platform | OS Specific |
Frequently Asked Questions
Common questions about our online MIDI editor.
Open the editor, fix the keeper notes, and export the cleaner MIDI
This page is for the stage where MIDI stops being disposable and starts being worth shaping. Use it to keep the best structure, remove obvious errors, and leave with a file you actually want to reuse.
The editor is free. Use MIDI Generator or AI Music Generator only when you still need better source material.