Audio Editor
Cut, arrange, clean up and mix on a multitrack timeline — nothing uploaded.
Drop Audio Files Here
MP3, WAV, FLAC, OGG, M4A, AIFF
Runs in your browser — once the page has loaded it works offline.
What people use it for
Cut and split a recording
Put the playhead where the cut goes and press S: the clip splits in place. Drag an edge to trim, drag the clip to move it, delete what you don't need. Undo takes any step back.
Combine audio files
Drop several files and each gets its own track. Lay them end to end for one long file, or stack them to play together, and export the mix as one MP3, WAV, FLAC or OGG.
Voice over music
Music on one track, voice on another. Fade the music in and out around the speech, set each track's level with its own fader, and use mute and solo to check a track on its own.
Clean up a single clip
Run the noise remover, the loudness normalizer or the pitch shifter on one clip without touching the rest of the timeline. Every run is a step you can undo.
Podcast editing
Take a cough out of the middle, tighten a pause, add the intro as its own track and level the two voices — a whole episode in one sitting, with nothing uploaded.
Save the project, keep working
Save the whole timeline as a .cut file — audio, tracks, cuts and fades — and open it again later on this page or in the cut.audio desktop app.
Audio editor online — edit audio in your browser
A free audio editor and MP3 editor in one: cut a recording into pieces, take a section out of the middle, make a quiet file louder, strip the hiss off a voice track, and export as MP3, WAV, FLAC or OGG. Each tool hands its result to the next one, so a file you cut and then cleaned up never gets uploaded, downloaded and re-uploaded in between — nothing leaves your computer at any point, because the decoding and encoding happen on your own machine. As a sound editor for everyday jobs it reads MP3, WAV, FLAC, OGG, AIFF, M4A, AAC and Opus directly, with no conversion step in between. Several files go onto their own tracks, so the same page is a multitrack editor for arranging a podcast or laying a voice over music, and the whole session saves as a .cut project you can reopen here or in the desktop app.
More audio tools
Frequently asked questions
Yes — free, no watermark. Three tracks per project and ten exports a day are free; Pro lifts both limits.
No. The file is decoded, edited and re-encoded inside your own browser, on your own machine, so it never reaches a server — ours or anyone else's. That is what makes it safe to open a recording here that you would not email to a stranger.
MP3, WAV, FLAC, OGG and AIFF are read directly, and so are M4A, AAC, Opus, WMA and AMR — the formats voice memos and messenger clips usually arrive in. There is no conversion step in between and no separate, shorter limit for them: every format gets the same one hour. You can export as MP3, WAV, FLAC or OGG.
About an hour in a browser tab, which is where the browser runs out of room rather than a rule we picked. A longer file is not simply refused: where the format allows it, the editor offers to cut it into parts and open the first one.
No. This is an online audio editor — a web page — so it works on Windows, macOS, Linux and ChromeOS, and on a phone without an app. Once the page has loaded, the editing itself needs no connection.
It is the editing half of one: a multitrack timeline with clips you cut, move and fade, per-track levels, mute and solo, and export to a single file. There are no instruments, no MIDI and no plug-in effects — for arranging and cleaning up recordings that is exactly what is needed; for making beats it is not the right tool.
For the everyday jobs, yes: cutting, trimming, arranging several recordings, removing noise, levelling loudness and exporting to MP3 or WAV all happen here without installing anything. Audacity still has the deeper toolbox — spectral editing, plug-ins, recording from many inputs — and a project you start here can move to the desktop app when you need more.
Yes. Save project writes a .cut file that holds the audio and the arrangement. Open it later on this page or in the cut.audio desktop app and the timeline comes back exactly as you left it.