Trim MP3 precisely with waveform zoom

Open the trim window

1. Add your files and select a clip.
2. Click Trim clip, or double-click the row.
3. The left line is the start, the right line is the end. Drag them, or click one and use the keys below.

Trimming never changes the source file. The app saves a start and end time in the project, and you can reset it any time before merging.

Zoom where it matters

Use the plus and minus buttons, the slider, or hold Ctrl and turn the mouse wheel over the spot you care about. Zoom goes from 1× to 32×. A scroll bar appears so you can move along the clip, and the time labels follow the visible part.

Exact placement

• ← → move the edge 0.01 s
• Shift + arrow moves 0.1 s
• Ctrl + arrow moves 1 s
• ↑ ↓ switch between start and end

You can also type the start and end time, or use the ±0.1 buttons.

Speech and music tips

For speech, zoom until the breath or word you are removing stands apart, preview the edge, and move it a little earlier if the first consonant sounds cut. For music, preview several times; if two songs were not made to join hard, use a short crossfade in the main window.

Trim silence is a quick start for clean studio recordings. With whispers, tape hiss or fade-ins, check both edges by ear.

Trimming and lossless merging

A trimmed clip has to be decoded to cut it exactly, so Smart mode switches to Studio processing and encodes once. If a no-re-encode join matters more than exact cuts, merge whole matching files. See merging MP3 without losing quality.

Keep two parts of one file

Duplicate the clip, then give each copy its own trim range.