Audio Trimmer

Browsers decode MP3 natively but don't encode it — WAV is the format a browser can write perfectly. It plays everywhere, imports into every DAW and phone, and being uncompressed it loses nothing from your selection. The trade-off is size: roughly 10 MB per stereo minute. If you specifically need MP3, convert the WAV afterwards.

It ramps the first and last 30 milliseconds of the selection from and to silence. Cutting a waveform mid-swing otherwise produces an audible click or pop at the boundary — the micro-fade is inaudible as a fade but removes the artifact completely. Leave it on unless you're cutting exactly on silence.

The sliders step in 50ms increments, and the waveform shows the selection against the audio's actual shape — line the handles up with the visual transients. For sample-accurate work (chopping drum hits), a DAW is the right tool; for ringtones, clips, and voice memo cleanup, this is plenty.

Codec support varies by browser: MP3, WAV, and OGG are near-universal, M4A/AAC works in most, but exotic formats (FLAC in some browsers, WMA, protected files) won't decode. Protected purchases (DRM) never will — that's by design.