Audio Trimmer Is Simple and Good. Both Tools Do the Same Thing — Except One Uploads Your File.

Audio Trimmer and Shrinkify's MP3 cutter are functionally nearly identical for basic trim operations. Both let you drag endpoints, preview the selection, and download the trimmed file. Both support MP3, WAV, OGG, FLAC, M4A, and AAC input. Neither requires an account.

The difference is where the cutting happens. Audio Trimmer uploads your file to their cloud servers. On a 3-minute podcast at 128kbps, that's about 2.8 MB — almost instant. On a 45-minute interview at 320kbps, that's a 108 MB upload before you can even see the waveform.

Shrinkify runs the trim operation in WebAssembly inside your browser tab. The file never leaves your device. The waveform renders from local memory. For most audio files under 50 MB, there's no perceptible speed difference. For large files or slow connections, the local approach is faster.

Audio Trimmer has one genuine feature advantage: fade in/fade out controls on the free tier. Shrinkify's MP3 cutter is trim-only with no effects. If you need fade effects, use Audio Trimmer.

Audio format reference

3-minute track at standard bitrates. Use this to choose the right export format.

Both Audio Trimmer and Shrinkify preserve the original format on export — no transcoding occurs during trim.

Just need to trim — no fade effects?

Cut audio locally — no upload, no server