Ultraconvert
Join
100% client-side — your audio never leaves your device

Trim audio,
without the upload.

Cut MP3, WAV, M4A, OGG and FLAC down to the part you want — right in your browser. Drag on the waveform, preview, download.

How it works

  1. 1

    Drop your audio

    Add an MP3, WAV, M4A, OGG or FLAC file. It's decoded locally — no upload.

  2. 2

    Set the in and out points

    Drag the handles across the waveform to pick the segment, then preview your selection.

  3. 3

    Download the clip

    Export the trimmed audio. When the format allows, the cut is lossless — no re-encoding.

Frequently asked questions

Is my audio uploaded to a server?+

No. Trimming happens entirely in your browser via the WebCodecs API and mediabunny. Your files never leave your device.

Does trimming reduce quality?+

When the source codec can be copied into a matching container (MP3, M4A/AAC, OGG, FLAC, WAV), the cut is lossless — the encoded samples are copied with no re-encoding. If copying isn't possible, the clip is re-encoded to MP3.

Which formats can I trim?+

MP3, WAV, M4A/AAC, OGG/Opus and FLAC. The output keeps the original format whenever a lossless cut is possible.

Is it free?+

Yes — free, no signup, no watermarks.