Sharing.io.vn Lab / Audio Recorder

Studio Voice & Microphone Audio Recorder

Record voice notes, dictation, musical rehearsals, or voiceovers directly in your browser. Features live recording duration timers, waveform activity feedback, and instant uncompressed local download.

Voice Capture Deck
RECORDER: IDLE
00:00
Elapsed Recording Duration
Encoder Specifications Opus Engine
Audio Codec Opus Variable Bitrate
Container Format WebM Audio (.webm)
Target Sample Rate 48,000 Hz
Data Privacy Local Browser Cache
Why WebM Opus?
Opus is the premier open audio coding standard developed by Xiph.Org and the IETF. It delivers superior acoustic fidelity to legacy MP3 while requiring approximately half the file size.

How In-Browser MediaRecorder Compresses Audio Streams

UNIT utilizes the native browser MediaRecorder API. Instead of uploading uncompressed PCM audio over the internet, your browser's internal C++ media pipeline encodes incoming audio chunks using the Opus codec on a dedicated background worker thread, ensuring smooth recording with zero lag.

How to Record Audio Online

Click Record Voice, allow microphone access, and speak. A live timer shows the elapsed duration. Press Stop & Finalize to finish, listen to the recording in the built-in player, and download it as a WebM audio file. Everything happens in your browser, so no account or upload is required.

Good uses for a browser voice recorder

Record voice notes, dictation, interview drafts, music rehearsals, podcast scripts, or voiceovers. If your recording sounds quiet or noisy, run the microphone test first to check input level and clipping.

Playing WebM files

WebM Opus plays natively in Chrome, Edge, Firefox, and most modern players such as VLC. If you need MP3 or WAV, convert the downloaded file with any free audio converter.

Voice Recorder FAQ

Is there a time limit for recording?

Sharing.io.vn does not set a time limit. Long recordings are limited only by your device memory and browser.

Where is my recording stored?

The audio is kept in your browser memory until you download it or close the page. It is never uploaded to a server.

Why can I not record any sound?

Check that the correct microphone is selected, that it is not muted in your operating system, and that microphone permission is allowed for this site.

Which audio format does the recorder use?

The recorder saves WebM with the Opus codec, which offers high quality at small file sizes.