PC System Audio Recorder [grabMP3]
This free online tool lets you record PC system audio directly from your browser. No downloads, no installs — just hit record and save what you hear as an MP3 file.
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Ready to record
Instructions
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Instructions:
- Click "Start Recording" to begin capturing PC audio output
- In the browser dialog, select "Share audio" tab or check "Share audio" checkbox
- Choose your entire screen or a specific window
- Make sure "Share audio" is enabled in the dialog
- Click "Stop Recording" to end the session
- Play back your recording to review it
- Click "Download as MP3" to save your recording
Note: This captures system audio (what you hear through speakers/headphones).
Alternative method: If the above doesn't work, try the "Stereo Mix" method below.
Alternative: Enable Stereo Mix (Windows)
- Right-click the sound icon in your system tray
- Select "Open Sound settings"
- Click "More sound settings"
- Go to "Recording" tab
- Right-click in empty area and select "Show Disabled Devices"
- Enable "Stereo Mix" and set as default
- Refresh this page and try recording again
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FAQ
- Does this record my microphone? No, it captures what you hear (system audio).
- Why do I need to share my screen? That's how browsers grant permission to capture system audio. It is NOT actually recorded.
- What if it doesn't work? Try enabling "Stereo Mix" in your sound settings (see guide above).