Sometimes all you want out of a video is the sound — a podcast recorded on camera, a lecture, a clip someone sent you. Downloading a video editor for that one task is overkill, and most "extractors" online still make you upload the video first. This one runs the whole thing in your browser.
Open the tool →Video files are often large and sometimes personal — a recording of a call, a class, a family clip. Uploading one just to strip out the audio track means it sits on someone else's server, even briefly, for something a browser can already do on its own. When the extraction happens locally, the video never has to leave your device at all.
Your browser decodes the video the same way it would to play it, pulls out the audio track, and encodes it as an MP3 — no plugin, no separate app, no install. When it's done you get a normal MP3 file you can save wherever you like.