What this tool changes
Load a MIDI file and hear a lightweight Web Audio preview. Inspect tracks, mute parts, loop a section, and scrub the timeline without uploading the file.
Local playback
MIDI player online
Load a MIDI file and hear a lightweight Web Audio preview. Inspect tracks, mute parts, loop a section, and scrub the timeline without uploading the file.
Open this MIDI player online tool
The interactive tool loads with JavaScript. MIDI parsing, editing, preview, undo, and download then run locally in your browser.
Load interactive toolWhat stays in the file
Events outside the selected operation remain in the low-level MIDI timeline. An untouched download returns the exact source bytes.
Supported files
Use an SMF Type 0 or Type 1 file with PPQ timing, up to 5 MB and 20,000 events.