Audio Trimmer
Cut and trim your audio files to the perfect length. Use the waveform to visually select the exact portion you want to keep.
Privacy-first
Audio never leaves your device
Fast processing
Powered by WebCodecs
Precise trimming
Waveform-guided cuts
Drop audio file here
or click to browse
The audio trimmer lets you slice MP3, WAV, OGG, FLAC, AAC, M4A, WMA, or AIFF files by dragging handles across a visual waveform. Because the waveform is rendered directly from the decoded samples in your browser, you can see exactly where a transient (a drum hit, a spoken syllable) lands and make sample-accurate cuts without guessing timecodes.
It is built for three common jobs: making a ringtone from a song, cleaning up the start and end of a recorded interview, and extracting a short clip to share on social media. You can preview the selected range with the play button before exporting, and the output is saved in the same format as the original so the audio path stays lossless-to-lossless or lossy-to-lossy.
No audio is uploaded anywhere. The decoding, waveform analysis, and encoding all happen on your device using WebCodecs, which means you can trim sensitive recordings — voice memos, confidential meetings, draft music — with full confidence that the file never leaves your machine.
Audio Trimmer — Frequently Asked Questions
How do I cut a specific part of an audio file?
Drop your MP3 (or other format), drag the green start handle to where you want the clip to begin, drag the red end handle to where it should stop. The waveform makes it easy to cut on a silence or right before a beat. Preview to confirm, then Export — only the selected range ends up in the output file.
How do I make a custom ringtone from an MP3?
Drop the song, trim to the 20–30 second hook you want, export. For iPhone, save as M4A (iTunes calls this M4R after renaming); for Android, MP3 is fine. Keep ringtones short (under 30 s) so they don't loop awkwardly before the call picks up.
How accurate is the trim?
Sample-accurate. Type timestamps into the time inputs for millisecond precision, or drag the handles on the waveform for visual selection. Keyframe-aligned cuts are instant; sub-sample cuts are sample-precise.
What audio formats can I trim?
MP3, WAV, OGG, FLAC, AAC, M4A, WMA, and AIFF. The trimmed output is saved in the same format as the source, so lossless stays lossless and lossy stays lossy.
Can I preview the trimmed range before exporting?
Yes. The play button plays only the portion between your start and end markers, so you can confirm the cut lands where you expect before committing to the full export.
Is my audio uploaded anywhere?
No. All trimming — decoding, waveform rendering, encoding — runs locally in your browser. Your audio never leaves your device, safe for voice memos, confidential meetings, or unreleased music.
How do I cut a specific part of an audio file?
Drop your MP3 (or other format), drag the green start handle to where you want the clip to begin, drag the red end handle to where it should stop. The waveform makes it easy to cut on a silence or right before a beat. Preview to confirm, then Export — only the selected range ends up in the output file.
How do I make a custom ringtone from an MP3?
Drop the song, trim to the 20–30 second hook you want, export. For iPhone, save as M4A (iTunes calls this M4R after renaming); for Android, MP3 is fine. Keep ringtones short (under 30 s) so they don't loop awkwardly before the call picks up.
How accurate is the trim?
Sample-accurate. Type timestamps into the time inputs for millisecond precision, or drag the handles on the waveform for visual selection. Keyframe-aligned cuts are instant; sub-sample cuts are sample-precise.
What audio formats can I trim?
MP3, WAV, OGG, FLAC, AAC, M4A, WMA, and AIFF. The trimmed output is saved in the same format as the source, so lossless stays lossless and lossy stays lossy.
Can I preview the trimmed range before exporting?
Yes. The play button plays only the portion between your start and end markers, so you can confirm the cut lands where you expect before committing to the full export.
Is my audio uploaded anywhere?
No. All trimming — decoding, waveform rendering, encoding — runs locally in your browser. Your audio never leaves your device, safe for voice memos, confidential meetings, or unreleased music.