Voice Recorder
Record a voice memo in the browser and download it. Nothing is uploaded.
How this test works
The microphone is opened and MediaRecorder writes the stream to a file entirely inside the browser. Nothing is sent anywhere, which is the substantive difference from most online recorders: those upload the audio to a server to encode it, and the file exists on that server whether or not the page mentions it. Here the recording is assembled in the tab and offered as a download, and it is lost when you close the page. The format is whatever the browser produces — WebM with Opus on Chromium, MP4 with AAC on Safari — and that is reported rather than disguised, because a page offering an MP3 download from MediaRecorder is either transcoding somewhere you cannot see or simply renaming the file.
What the results mean
- Length and size
- What was captured. Opus at speech settings is efficient — a minute is typically well under a megabyte.
- Format
- The container and codec the browser chose. Not a setting this page controls.
- Peak level
- How close the loudest moment came to the ceiling. Useful for judging whether to re-record.
- Browser processing
- Left on here, which suits speech: noise suppression and automatic gain both help a voice memo.
Common problems and fixes
- The recording stopped when I switched tabs
- Browsers throttle background tabs. Keep the tab in the foreground for anything you cannot afford to lose.
- I need an MP3
- No browser's MediaRecorder produces one. Convert the downloaded file afterwards — any audio converter handles WebM and MP4 — rather than trusting a page that claims to give you MP3 directly.
- I closed the tab and lost it
- Nothing is stored anywhere, which is the trade for nothing being uploaded. Download as soon as you stop.
Frequently asked questions
Is my recording uploaded anywhere?
No. It is captured, encoded and offered for download entirely inside this tab. That is genuinely different from most online recorders, which upload to a server to do the encoding.
What format will I get?
Whatever your browser's MediaRecorder produces — usually WebM with Opus on Chromium and MP4 with AAC on Safari. Both are widely supported; convert afterwards if you need something specific.
How long can I record?
Limited by the tab's memory rather than by any setting here. Several minutes is comfortable; very long recordings risk exhausting the tab, and there is no recovery if that happens.