Audio Trimmer
Trim cut audio with waveform
Trim cut audio with waveform Runs locally in your browser
About the
The Audio Trimmer cuts any audio file down to the segment you need, in your browser, with a waveform so you can see what you are cutting. Drag the start and end markers, preview the selection, and export as MP3 or lossless WAV.
Editing happens on the decoded audio buffer, so cuts are sample-accurate rather than snapped to keyframes like video trims. Decoding and encoding run through the Web Audio API and a local MP3 encoder; no file is uploaded.
It is the fastest way to make a ringtone, strip silence from a recording, or pull one track section out of a long file for a edit.
Where people use the
- Cutting a 30-second ringtone from a full track.
- Trimming dead air from the start of a voice memo.
- Isolating one section of a long recording for an edit.
How to use the
- 1
Add an audio file
Drop in a track; the waveform renders as soon as it decodes.
- 2
Set the cut
Drag start and end on the timeline sliders; the selected length updates live.
- 3
Preview
Play the selection to check the boundaries before exporting.
- 4
Export
Choose MP3 or WAV and download the trimmed file.
Tips and best practices
- Zoom your ears, not your eyes: preview the selection before exporting.
- Export WAV if the trim feeds into another edit; MP3 for final delivery.
Frequently asked questions
How accurate are the cuts?
Sample-accurate. The trim operates on decoded PCM, so the boundaries land exactly where you drop them, unlike keyframe-snapped video cuts.
Does trimming re-encode?
The selection is re-encoded on export: MP3 at 192 kbps, or WAV if you need lossless. Quality loss is minimal.
Can I fade in or out?
Not in this tool. Export the trim and apply fades in your editor, or keep the cut tight.
Is the audio uploaded?
No. Decoding, trimming and encoding all happen locally in your browser.