Which audio files can I trim?

This tool accepts audio files supported by the bundled ffmpeg build. The file never leaves your device, so there is no upload limit — the only ceiling is what your browser can hold in memory.

What output format does the trimmer create?

The selected segment is decoded and re-encoded as MP3, even when the source uses another audio format.

How do fade-in and fade-out work?

Fade-in raises volume from silence at the start; fade-out lowers it to silence at the end. A fade duration longer than the selected clip is capped to the clip length.

Why can processing take time?

The browser loads FFmpeg and re-encodes the selected audio. Long files and slower devices need more memory and processing time.

Audio Trimmer & Ringtone Maker

LocalFree

Select a segment from an audio file, add optional fades, and export the result as MP3 in your browser.

or drop it here

Choose an audio file to begin.

About the audio trimmer

Choose a song or recording, set the start and end points, optionally add fades, and export an MP3 for a ringtone, alarm, or short clip. Processing happens locally with ffmpeg compiled to WebAssembly; your audio is never uploaded.

How to use Audio Trimmer & Ringtone Maker

1Select one audio file and use the preview to confirm its duration.
2Set the clip start and end, then optionally enable and time fade-in or fade-out.
3Select Trim audio, preview the result, then download the MP3 file.

Frequently asked questions

Which audio files can I trim?: This tool accepts audio files supported by the bundled ffmpeg build. The file never leaves your device, so there is no upload limit — the only ceiling is what your browser can hold in memory.
What output format does the trimmer create?: The selected segment is decoded and re-encoded as MP3, even when the source uses another audio format.
How do fade-in and fade-out work?: Fade-in raises volume from silence at the start; fade-out lowers it to silence at the end. A fade duration longer than the selected clip is capped to the clip length.
Why can processing take time?: The browser loads FFmpeg and re-encodes the selected audio. Long files and slower devices need more memory and processing time.