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Audio Trimmer
Trim an audio file to the section you want by start/end time and export an MP3, all in your browser via ffmpeg.wasm.
⚡ Runs entirely in your browser via ffmpeg.wasm. The engine (~30 MB) downloads on first use; large files are slow and limited by your device's memory. Nothing is uploaded.
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Click or drop an audio file to trim
Processed locally in your browser — never uploaded.
🔒 This tool runs entirely in your browser. Your data is never uploaded.
Frequently asked questions
How do I trim the clip?＋
Set a start and end time and export just that section as an MP3.
Does trimming re-encode the audio?＋
Yes — the selected region is encoded to the output MP3 locally via ffmpeg.wasm.
Is my audio private?＋
Yes — trimming happens in your browser; nothing is uploaded.