A free, privacy-first audio recorder built for the browser.
OnlineAudioRecorder.com is a free online audio recorder that runs entirely inside your web browser. There's nothing to download, no account to create, and your recordings never leave your device. We built it because we were frustrated with existing tools that require signups, impose time limits, or upload your private audio to servers you don't control.
We believe recording audio should be as simple as opening a web page and clicking a button. And it should be private by design, not as an afterthought. OnlineAudioRecorder.com uses your browser's built-in Web Audio API and MediaRecorder API to capture audio locally. When you download a recording, it goes straight to your device. We never see it, store it, or process it on our servers.
When you click the record button, your browser requests access to your microphone. This permission prompt is controlled by your browser, not us. We cannot access your mic without your explicit approval. Once you allow it, audio is captured using the MediaRecorder API, a standard web technology supported by all modern browsers.
For the waveform visualization during recording, we use the Web Audio API to analyze frequency data in real time. When you stop recording and want to download as MP3, we use lamejs, a JavaScript port of the LAME MP3 encoder to encode your audio in the browser before it's saved to your device. Nothing is sent over the network.
The recorder works in all modern browsers:
OnlineAudioRecorder.com is completely free. There is no premium plan, no subscription, and no hidden fee. We keep the lights on through non-intrusive advertising. If you find the tool useful, the best way to support us is simply to use it and share it with someone who needs a quick, private way to record audio.
Questions, feedback, or bug reports are welcome. Head to our Contact page to get in touch. We read every message.