Does this viewer play MIDI audio?

It focuses on parsing and visualizing the MIDI structure — tracks, instruments, channels and notes — directly in your browser.

Are my MIDI files uploaded?

No. Files selected from your device stay on your device. Only public sample files are requested from the server.

Which MIDI files are supported?

Standard MIDI Files (.midi, .mid), both format 0 (single track) and format 1 (multi-track), are parsed in the browser.

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MIDI Viewer

Free online MIDI viewer. Open .midi and .mid files directly in your browser to inspect tracks, instruments and notes — without uploading them.

.midi.mid

C Major Scale — MIDI

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Tool usage guide

About this file format

MIDI (.midi, .mid) is not an audio format — it is a set of musical event instructions (note-ons, note-offs, program changes) that a synthesizer turns into sound. A Standard MIDI File (SMF) stores these events grouped into tracks and channels. Because MIDI describes performance data rather than recorded audio, files are tiny and the viewer can show every track, instrument and note.

MIDI Viewer

About this file format

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MIDI Viewer

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