midi.js
A JavaScript library for creating MIDI applications in the browser with soundfont support and audio effects.
What is midi.js?
MIDI.js is a JavaScript library that enables developers to create MIDI-powered web applications. It solves the problem of complex audio programming by providing tools to load soundfonts, play MIDI files, apply audio effects, and synchronize multiple instruments directly in the browser.
Web developers and creative coders building interactive music applications, audio-visual experiments, or educational tools that require MIDI playback and synthesis in the browser.
Developers choose MIDI.js because it bundles essential MIDI functionality—like soundfont support, precise timing, and audio effects—into a single library, reducing the need to integrate multiple low-level Web Audio API components manually.
Overview
:musical_keyboard: Making life easy to create a MIDI-app on the web. Includes a library to program synesthesia into your app for memory recognition or for creating trippy effects. Convert soundfonts for Guitar, Bass, Drums, ect. into code that can be read by the browser. Supports multiple simultaneous instruments and perfect timing.
Use Cases
Best For
- Building web-based piano or instrument simulators
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