Edit audio online — privately
Need to cut silence, fix quiet recordings, slow a podcast clip, or merge takes? This online audio editor runs entirely in your browser using the Web Audio API for smooth preview, with FFmpeg.wasm loaded only when you export to formats that need it. Your files never leave your device during editing. Timestamps use minutes:seconds:milliseconds (MM:SS:mmm) everywhere in the editor.
- Choose or drop a file — tap Choose File or drag an audio file onto the drop zone. You can also start with Voice Recorder to capture a fresh take.
- Pick a feature — Trim, Volume, Speed, Pitch, Equalizer, Silence, Reverse, Join, and Record appear in the toolbar. The active tool is highlighted in brand yellow.
- Preview on the waveform — scrub the playhead, play, and adjust controls while you listen. Trim handles select the region for export or clipboard actions.
- Save — pick an export format (mp3, m4a, m4r, flac, or wav), then download. Processing stays on your device.
Keyboard shortcuts
These shortcuts work while the editor is open (not while typing in a text field):
| Shortcut | Action |
|---|---|
| Space | Play / pause |
| Shift+N | Insert silence at the playhead |
| T / V / S / P / E / R / J | Trim, Volume, Speed, Pitch, EQ, Reverse, Join |
| Shift+R | Start / stop voice recording |
| Ctrl/Cmd+C | Copy the trimmed selection |
| Ctrl/Cmd+X | Cut the trimmed selection |
| Ctrl/Cmd+V | Paste at the playhead |
| Ctrl/Cmd+S | Save / export |
| Ctrl/Cmd+Z | Reset to the original file |
| ← → | Scrub 1 second (hold Shift for 5 seconds) |
| Home / End | Jump to selection start / end |
Features included
| Feature | What it does | Focused tool |
|---|---|---|
| Trim | Set start and end with handles or time fields | Audio Trimmer |
| Volume | Boost or reduce gain with live preview | Audio Volume Changer |
| Speed | Playback rate from slow practice to fast skim | Audio Speed Changer |
| Pitch | Shift pitch while keeping tempo natural | Audio Pitch Changer |
| Equalizer | Preset + graphic EQ with live preview | Audio Equalizer |
| Silence | Insert timed silence at the playhead | Audio Silence Adder |
| Reverse | Flip the buffer instantly | Audio Reverser |
| Audio Joiner | Visual timeline of clips you can append | Audio Joiner |
| Voice Recorder | Capture from your microphone | Built into this hub editor |
How hybrid processing works
Interactive editing uses the Web Audio API so scrubbing and preview stay responsive on phones. When you choose an FFmpeg-backed export format, the editor loads the WASM core once, shows progress, and encodes on-device. If FFmpeg cannot load, WAV export still works so you never lose your edit.
Privacy and limits
Audio decoding and preview run locally. Very long high-sample-rate files may hit browser memory limits — trim first or export a shorter region. This tool is built for everyday clips and voice work, not multi-track studio sessions.