Local privacy
Files are decoded in memory and never sent to Tervix.
Online Audio Recorder
Record your microphone using formats supported by your browser.
Your files are processed locally and are never sent to our servers.
This browser does not support MediaRecorder.
How to use this tool
- 1
Record, pause, stop and download using a supported format.
- 2
Review the waveform, parameters and browser limitations.
- 3
Preview and download the result without leaving the browser.
Transparent local audio
Real compatibility
Codecs the browser cannot process are never promised.
Verifiable export
Edits export as PCM WAV and batches as ZIP.
Frequently asked questions
Is my recording stored?
No. It remains in memory until replaced or the page closes.
Is my file uploaded?
No. Loading, processing and export happen on your device.
Why might a format fail?
Each browser exposes different codecs. Tervix reports the error and preserves the source.