AnyTool
Your files never leave your device. All processing happens locally in your browser.

How do I make a MIDI file and beats online for free without any software?

Open AnyTool's MIDI Sequencer, draw beats and melodies on a piano-roll step grid, set the tempo, and press play to hear it through your browser's Web Audio engine. When you are done, export a standard .mid file you can drop into any DAW (FL Studio, Ableton, GarageBand) or a rendered WAV. Everything runs in your browser — no upload, no sign-up, no plugins, no CDN.

  • Piano-roll / step sequencer for drums, basslines and melodies
  • Adjustable tempo and instant Web Audio playback
  • Export real .mid files for any DAW, plus rendered WAV audio
  • 100% in your browser — no upload, no sign-up, no plugins

What is

MIDI step sequencer / piano roll

A MIDI sequencer is a tool for arranging musical notes on a grid (a piano roll or step grid) where each cell is a note at a moment in time, then playing them back and exporting a standard MIDI (.mid) file. MIDI stores note events — pitch, timing, velocity — rather than audio, so it can be loaded into any DAW or synth. A client-side sequencer composes, plays and exports MIDI in the browser with nothing uploaded.

Audio Tools

Related terms

MIDIpiano rollstep sequencerDAWWeb Audio

How to Make a MIDI File Online

Compose beats and melodies on a step grid and export MIDI in your browser.

60 secWeb browser
  1. 1

    Program the grid

    Click cells on the piano-roll step sequencer to place notes and drum hits.

  2. 2

    Set tempo and play

    Choose the BPM and press play to hear it through Web Audio.

  3. 3

    Export

    Download a standard .mid file for your DAW, or a rendered WAV — nothing is uploaded.

Result: A .mid file and WAV audio

Frequently Asked Questions

Yes — it exports a standard .mid file for any DAW or synth.

The export is a valid Standard MIDI File you can import into FL Studio, Ableton, Logic, GarageBand or any synth, and you can also render a WAV of the playback.

Yes — it is free and runs entirely in your browser with no upload.

There is no account, no plugin and no daily cap; your project stays on your device and playback runs locally via the Web Audio API.

Yes — the step grid handles drum patterns, basslines and melodies.

Each row maps to a note or drum voice and each column to a step, so you can program a drum sequence and a melodic line in the same piano-roll grid and set the tempo.

Detailed Explanation

Methodology

How the MIDI Sequencer Works

AnyTool sequences music entirely in the browser. Notes and drum hits are placed on a piano-roll / step grid as a typed note-event model (pitch, step, velocity, length), and playback is scheduled through the Web Audio API at the chosen tempo with a moving playhead. Export writes a Standard MIDI File (SMF) directly from the event model — a real .mid that imports into any DAW or synth — and the same playback can be rendered offline and encoded to WAV. Nothing is uploaded and no audio backend or CDN is contacted.

  • Runs client-side — the project is never uploaded
  • Piano-roll / step grid for drums, basslines and melodies
  • Web Audio playback with adjustable tempo and a playhead
  • Exports a standard .mid file (SMF) for any DAW
  • Renders playback to WAV audio
  • No sign-up, no plugin and no CDN
Privacy & Security

Privacy vs Online Sequencers

Many browser beat makers and sequencers require an account, lock MIDI export behind a paywall, or stream playback from a server. AnyTool runs the sequencer and synth fully on the device, exports real .mid files for free, and never uploads the project — there is no account, watermark or daily cap. This makes it a private, offline-capable way to sketch beats and melodies and move them into a DAW.

MIDI sequencing: AnyTool vs typical tools
CapabilityAnyToolTypical tools
Data handlingIn your browserOften server-side
Real .mid exportYes (free)Often paywalled
WAV renderYesSometimes
Account requiredNoCommon
Watermark / capNoneCommon

AnyTool is a privacy-first client-side MIDI sequencer — composition and playback run locally and nothing is uploaded.