Audio Editor Online Free
Edit audio files right in your browser with a full waveform editor. Cut, delete, copy, and paste sections. Add fade-in and fade-out effects, trim silence automatically, reverse audio, and adjust volume, speed, pitch, and EQ. Undo any change. Save as MP3, WAV, or FLAC. Your audio files are never uploaded to any server.
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- Only upload files you have the right to use. Copying or sharing other people's music, videos or recordings without permission can violate copyright law. FreeSoundTools does not store your files on a server.
When to use it
- Trim and clean up voice recordings and podcasts
- Cut unwanted sections from meeting recordings
- Add fades and adjust volume for smoother audio
- Edit music recordings with precise waveform selection
How to use
- Drop your audio file into the box or click to choose one.
- Select a section on the waveform by clicking and dragging.
- Use the toolbar to cut, delete, silence, reverse, or fade the selection.
- Adjust volume, speed, pitch, and EQ in the tabs below the waveform.
- Choose your output format and save the edited file.
How it works
The editor displays your audio as a waveform and lets you select regions with click-and-drag. Edits are applied using the Web Audio API and custom processing running in your browser. Full undo/redo support lets you experiment freely. The one-pass polish feature lets you chain trim, volume, speed, pitch, EQ, and fade into a single operation. Nothing is uploaded to a server. How to verify. Also available as a free REST API for developers and AI agents (edge-processed, zero retention).
Also available as: Waveform Editor (full features)
FAQ
What editing operations are available?
Cut, delete, paste, silence, reverse, fade in, fade out, trim silence, volume adjustment, speed change, pitch shift, and 3-band EQ.
Can I undo my edits?
Yes. Full undo support lets you go back through your edit history.
What is one-pass polish?
It chains multiple operations (trim, volume, speed, pitch, EQ, fade) into one step so you can preview and apply them all at once.
What formats can I save in?
MP3, WAV, and FLAC. You can set quality and sample rate.
Are my files uploaded?
No. Everything runs in your browser. Your audio stays on your device.
Last checked: October 10, 2026 · FreeSoundTools team