MIDI Inspector

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Overview

Every note, inspected. Open and play .mid/.midi files from any web page.

MIDI Inspector turns your browser into a full MIDI viewer and player. Right-click any .mid or .midi link → "Open in MIDI Inspector" and the file plays instantly with the bundled MuseScore_General SoundFont. Drop your own .mid/.sf2/.sf3 files in too. FEATURES • Piano Roll with measure/beat ruler and locate-playhead • Per-track mute/solo and per-channel filter • Chord analysis, tempo curve, velocity view, raw protocol inspector • Drag-and-drop .mid files or right-click links on any page • 8 languages: English, Español, Français, 简体中文, 繁體中文, 日本語, Tiếng Việt, Русский • Light and dark themes • Bundled GM-compatible SoundFont (~40 MB) — works offline • Load your own .sf2 / .sf3 / .dls SoundFont anytime PRIVACY Everything runs locally in your browser. No telemetry, no analytics, no uploads. The <all_urls> permission is used only to fetch the specific MIDI URL you chose to open. Full policy: https://midi.jsl.plus/privacy

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Details

Version
0.3.1
Updated
May 10, 2026
Flag concern
Offered by
jsl+
Size
34.27MiB
Languages
English (United States)
Developer
Email
hi@jsl.plus
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

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