Online Voice Recorder

What format is the audio saved in?

The recorder uses your browser's native format: usually WebM on Chrome and Edge, Ogg on Firefox, and M4A on Safari. All of them are lightweight files that play fine in VLC, WhatsApp, Telegram, and every major audio editor. If you specifically need an MP3, you can convert the downloaded file with a free program like Audacity.

Tips for a clean recording

Keep the microphone 4–8 inches from your mouth and slightly off to the side, that way you avoid the bursts of air on "p" and "b" sounds. Record in a room with curtains, rugs, or a couch: soft surfaces soak up echo. Before the real take, do a 10-second test and play it back to check your levels, redoing it right away is much cheaper than discovering a problem at the very end.

Where to put the microphone, and why it matters more than the microphone

The rule that changes the result most is distance: at ten to twenty centimetres from the mouth the voice dominates the room noise, at a metre the ratio flips. Doubling the distance drops the voice by six decibels while the noise stays the same, which is why a cheap microphone up close nearly always beats an expensive one far away.

The microphone should be held slightly to the side, not straight in front of the mouth: the consonants «p» and «b» push a blast of air that becomes a thud on the microphone, and moving it a few centimetres removes it. It is the same reason studios put a mesh screen in front of the microphone.

The room is heard more than people think

A space with bare walls sends the sound back, and in the recording the voice arrives distant and boomy: it is the flaw no software really removes, because the reverb is mixed into the voice and cannot be separated. Curtains, rugs, a sofa, a full bookshelf or even just recording in a room with the wardrobe open change the result more than any equipment.

It is worth recording ten seconds of silence before starting: they let you hear what the room's background noise really is — a fridge, an air conditioner, a computer — and often reveal that something can be switched off. It is the only way to notice, because while talking that noise goes unheard.

The formats that come out of the browser

The recorder uses the browser's native format, and that is where the differences come from: WebM on Chrome and Edge, Ogg on Firefox, M4A on Safari. They are all light files, readable by VLC, by phones and by messaging apps, but not by every older editing program.

If the file is needed for further work, it is better to convert it once only to WAV: every hop from one compressed format to another recompresses from scratch and takes away a little quality. And if it is just to send through a chat, it is fine as it is: converting to MP3 would add a loss while saving almost nothing in size.

The things you only find out afterwards

That the recording never started, because microphone permission was denied months ago and the browser no longer asks. That the level was too low and raising it afterwards raises the noise too. That the phone in your pocket vibrated during the interview. All of these are avoided by a thirty-second test listened back before really beginning.

The advantage of recording here is that the audio never leaves the device: it stays in the browser until you download it. For an interview, a medical appointment or a meeting that is the difference that counts, and it is worth remembering that recording a conversation you take part in is lawful in many countries, while publishing it is an entirely different question.

Nearby tools

To check the microphone before recording there is Microphone test. Afterwards, to trim there is Audio trimmer, to join several parts Merge audio, to change format Audio converter and for speed Change audio speed.