How the vocal remover works
ToolGPT first makes an MP3 copy of the file's sound in your browser. That copy goes to ToolGPT's separation service, which splits it into two parts: the voice, and everything else.
You get the instrumental as the main result. The voice part is kept with it, so the switch on the result card changes sides on your device, without a second upload.
For an audio file, the result is an MP3. For a video, the instrumental replaces the original soundtrack, and you get the video back without the singing.