How to trim audio online
An audio trimmer removes unwanted start or end sections (and can isolate a middle region) without re-recording. This tool keeps your file on your device: decode locally, mark the region, preview, then export MP3, WAV, M4A, M4R, or FLAC.
- Choose or drop a file — upload MP3, WAV, OGG, M4A, FLAC, or another format your browser can decode.
- Set the region — drag yellow handles on the waveform or type Start and End times (MM:SS:mmm).
- Preview — press Play to hear only the selected span before you commit.
- Save — pick an export format and download the trimmed clip. Your original stays on your computer.
When to use an audio trimmer
- Remove silence, coughs, or “um” phrases at the edges of voice notes.
- Cut long intros from podcasts, sermons, or meeting recordings.
- Export a short sample from a longer song for social posts or demos.
- Isolate a quote or chapter before you join other takes.
Trim accuracy and timestamps
Start and End fields use minutes:seconds:milliseconds so you can land cuts on breaths or word boundaries. Scrub the playhead, then nudge times. Export uses the selected region so dead air outside the handles never appears in the download.
Trim vs delete middle
Region trim keeps everything between Start and End. To remove a middle section, cut or delete the selection (when available in the editor), or split the job: trim the first keep-region, trim the second, then use the Audio Joiner to merge the pieces.
Privacy and formats
Editing uses the Web Audio API in your browser. Encoding may load on-device helpers for some formats. Files are not uploaded to ShoutingNow servers for processing. Very long high-sample-rate files may need a shorter region first if memory is tight.