Free Online Voice Recorder That Never Uploads

About the Audio Recorder

Recording in a browser has been possible for years and is still surrounded by suspicion, which is entirely reasonable. A page asking for your microphone is asking for a great deal, and most pages that do it are sending the result somewhere. This one is not, and rather than burying that in a privacy policy it is written at the top of the page, where it belongs, along with a way to check it: turn your wifi off and record anyway. Everything works, because nothing was ever going anywhere.

What actually happens is that the browser hands this page a live stream from the microphone, the page collects it in memory, and when you press save your browser writes a file to your disk. The recording exists in one place, your own tab, and closing the tab destroys it. That is the whole architecture, and it is why there is no account, no limit and no queue.

The permission request is deliberately not made when the page loads. A microphone prompt appearing the instant you arrive is alarming, and a lot of people click block, which is then awkward to undo. Here it happens when you press record, which is the moment it makes sense.

The setting most worth understanding is the browser processing. Echo cancelling, noise suppression and automatic gain control are all designed for video calls, where the priority is that nobody hears themselves and everyone stays intelligible. On a recording they behave quite differently: the gain control breathes in the gaps, the noise suppression removes room tone and often the tails of words with it, and quiet passages can disappear altogether. They are on by default, because that is what a browser does and what most people expect, but for anything you care about the raw input is better, and it is one setting away.

The last piece is the format. Browsers record in whatever shape they prefer, which is usually WebM with Opus in Chrome and MP4 with AAC in Safari, and neither is what most people want to end up with. Rather than handing you that, the recording is decoded and written out in whichever format you chose, so the file you get is the file the page said you would get. WAV is exact and downloads nothing at all.