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Audio Trim (Simple Cut Only)
Cut audio locally in your browser. No upload. No effects. Just trim.
Loading FFmpeg core...
No upload. Everything runs locally in your browser.
This tool uses ffmpeg.wasm. Package licenses in this project include @ffmpeg/ffmpeg (MIT) and @ffmpeg/core (GPL-2.0-or-later).
Audio Trim: Guide
- Intent
- Trim audio online without uploading: cut a simple start/end segment from an audio file and download the clipped result (no effects, no accounts).
- What it does
- Uses FFmpeg in your browser to trim between two timestamps, typically using fast stream copy.
- Key features
- Start/end seconds, Fast stream copy when possible, Download trimmed file
- Privacy
- Your audio stays on your device. This page downloads the FFmpeg WebAssembly engine; files are never uploaded.
- Best for
- Removing dead air or trimming a clean clip from a longer recording
- Making short previews, ringtones, or SFX clips quickly
- Anyone searching 'trim mp3 online' who wants local processing (no upload)
- Why this tool
- Simple by design: start/end trim without a full audio editor UI
- Local-first FFmpeg processing: files stay on your device
- Fast for one-off edits before you send or publish a clip
How to use
- 1Upload an audio file (or drag & drop one).
- 2Set Start time and End time (in seconds).
- 3Click Trim audio and wait for processing.
- 4Download the trimmed output file.
Common mistakes
- End time must be greater than start time (otherwise trimming fails).
- Expecting sample-accurate cuts (stream copy can snap to keyframes in some formats).
- Some formats preview poorly in the browser even if FFmpeg can process them.
Examples
Remove dead air at the beginning
Start: 3.5
End: 42.0
Output: original_trim_3.5s-42s.ext
Create a 30-second preview
Start: 60
End: 90
Output: a short clip for sharing.