How it works
- Drop your audio file. MP3, WAV, FLAC, AIFF, OGG or M4A up to 500 MB — it's decoded locally, nothing is uploaded.
- Frame your selection on the waveform. Drag the region handles or type exact start/end times, choose Keep or Remove, snap the cut to the detected beat grid and add fades if you need them.
- Export and download. The cut is rendered in your browser and downloaded in the same format as the original file.
Features
- 100% in your browser. Your file never leaves your computer — the preview runs on the Web Audio API and the final render on ffmpeg.wasm, no upload.
- Precise visual selection. Zoomable waveform, draggable handles and mm:ss.ms time fields for millisecond-accurate cuts, in Keep or Remove mode.
- Beat-locked cutting. The tempo is detected automatically and the handles snap to the beat grid — BPM and offset stay adjustable by hand.
- Logic-style fades. Fade in and fade out with draggable length and curve handles, previewed in real time before you export.
FAQ
Is this audio trimmer free?
Yes. Anonymous users get 5 free exports per day across AudioKit's free tools — no account needed. Loading a file and previewing your cut don't count; only the final export does. If you need more, AudioKit Premium removes the daily limit. There's no watermark and no feature lock: the free trim is the full trim.
Is my audio file uploaded to a server?
No. The whole tool runs in your browser: your file is decoded locally with the Web Audio API for the waveform and preview, and the final cut is rendered on your own machine with ffmpeg.wasm. The audio never leaves your computer. The only network call is a tiny anonymous counter that tracks your daily free quota.
Which audio formats are supported?
MP3, WAV, FLAC, AIFF, OGG and M4A files up to 500 MB. The trimmed file is exported in the same format as the original — an MP3 in gives an MP3 out, a WAV in gives a WAV out, with no format decisions to make. If your file is in another format, run it through our free audio converter first.
Does trimming reduce audio quality?
It depends on the format. Lossless files (WAV, AIFF, FLAC) are re-rendered losslessly, so nothing is lost. Lossy files (MP3, OGG, M4A) must be decoded and re-encoded to apply the cut and fades — MP3 is re-encoded at 192 kbps — which adds one generation of lossy compression. That's inaudible in most situations, but start from a lossless file when quality is critical.
How do I cut a song for a ringtone?
Load the song, leave the tool in Keep mode, then drag the region handles around the part you want — or type exact start and end times in mm:ss.ms. Most phones expect ringtones of about 20–30 seconds. Add a short fade in and fade out (0.5 s works well) so the clip doesn't click, then download the trimmed file.