Does Audio Trim upload my data?

Your audio stays on your device. This page downloads the FFmpeg WebAssembly engine; files are never uploaded.

How do I use Audio Trim?

1. Upload an audio file (or drag & drop one). 2. Set Start time and End time (in seconds). 3. Click Trim audio and wait for processing. 4. Download the trimmed output file.

What are common mistakes with Audio Trim?

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.

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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.