How it works
Complete the job in three clear steps
- Choose an audio file and trim times from your device.
- Set the timing or output options and create a trimmed MP3.
- Preview and download the result before closing the page.
Private Lucaden media tool
Trim Audio Online
Cut an audio file to a selected start time and duration and export it as MP3.
Free to use Your media stays on this device; the FFmpeg WebAssembly runtime downloads when needed.
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Important
Check the result before relying on it
Keep an untouched copy of important source files. Browser processing depends on available device memory, and you should inspect every downloaded result before deleting the original.
Practical details
What this Lucaden tool does
FFmpeg seeks to the chosen start, keeps only the requested duration, and encodes a fresh MP3 result. This is useful for excerpts, samples, alerts, and removing silence.
Lucaden writes the source into FFmpeg's temporary in-browser file system, creates the output, then removes both temporary files. The source media is not uploaded to Lucaden.
Included capabilities
- Decimal start and duration
- MP3 output
- Audio-only processing
- Local preview
Useful for
- Create a ringtone excerpt
- Remove silence
- Share a short quote
- Cut a sound effect
Questions
About this tool
Can I enter an end time instead?
Use duration equal to end time minus start time.
Will metadata be preserved?
Do not assume source tags or artwork will be copied to the new file.
Open-source foundations
Built transparently
Lucaden documents its standards sources, architectural references, and permissive runtime dependencies while keeping this workspace consistent with the Lucaden interface.