Free audio editors that run in your browser

Why nothing is uploaded

The Web Audio API gives a browser tab genuine audio processing: it can decode a file into raw samples, apply gain, filters, compression and reverb, and re-encode the result. All of it runs on your processor, on data read from your own disk.

That removes the upload entirely. Open a 40 MB WAV and you are editing it a second later, not watching a progress bar — and no copy of your recording exists on anyone's server. For a voice memo, an interview or an unreleased track, that difference is the whole point.

What these editors do well

Cutting: removing the dead air at the start and end of a recording, or extracting the section you actually want. Levelling: normalising a set of clips so they play at a consistent volume. Repairing: a fade to hide a click, a compressor to tame a peak.

They are also the answer when you cannot install software — a school machine, a client's laptop, a locked-down work computer. The tool is a URL.

Where they stop

Single track. You cannot layer a voice over music and mix the two — that needs a multitrack workstation, and no browser tool does it convincingly yet.

No MIDI, no virtual instruments, no plugin format. If your workflow depends on a specific VST, this is not a replacement.

Long files strain browser memory. An hour of uncompressed audio will push a modest machine, and the operating system can kill the tab. Export early — there is no autosave, and a closed tab takes the edit with it.

Frequently asked