No upload, 100% local, no account

Vocal remover (karaoke)

Drop a stereo track to cancel the centre channel and reduce the lead vocals. Everything runs in your browser; your file never leaves your device.

How Vocal remover (karaoke) works

Vocal remover makes a karaoke version of a song by cancelling the centre of the stereo image, the place where lead vocals usually sit. Drop a stereo track, choose a stereo or mono output, and download the result. It runs through ffmpeg (a `pan` filter) compiled to WebAssembly.

Be realistic about what this does: it is phase cancellation, not AI separation. It subtracts the left and right channels, which removes whatever is panned dead-centre, often the lead vocal, but also centred bass, kick and snare. On some mixes it works surprisingly well; on others it barely changes anything or leaves obvious artefacts. It never perfectly isolates a voice, and there is no account and no watermark.

Frequently asked questions

Are my files uploaded to a server?

No. ffmpeg compiled to WebAssembly removes the vocals in this browser tab, your track is read into memory on your own device and the pan filter subtracts the two channels (pan=stereo|c0=c0-c1|c1=c1-c0), cancelling whatever sits in the centre, and the karaoke result is offered as a local download. It is honest channel maths, not AI separation. Nothing reaches Sunasty or any third party. Open your browser's DevTools, go to the Network tab and watch: no request carries your audio.

Does this fully isolate or remove the voice?

No. It uses centre-channel phase cancellation, not AI source separation. It removes whatever is mixed dead-centre, usually the lead vocal, but also centred bass and drums. Quality depends heavily on the song: some tracks come out clean, others keep a faint vocal or sound thin. We make no promise of perfect isolation.

Why does it need a stereo file?

The technique works by subtracting the left and right channels from each other. A mono file has only one channel, so there is nothing to cancel against and the trick cannot work. Use a normal stereo song.

Stereo vs mono output, which should I pick?

Stereo keeps a wider image and is the usual choice. Mono collapses everything to a single channel holding the side signal, which can sound more consistent on some material. Try both and keep the one that sounds best.

Does it work offline?

Yes, once the page has loaded. Because the processing happens on your device, you can disconnect from the network and the tool keeps working. This is the clearest proof that your data never leaves your machine.

Is it free? Do I need an account?

It is completely free and requires no sign-up. There are no watermarks, no daily limits and no tracking cookies needed to use the tool.