Audio Trimmer
Trim and cut audio files in your browser with the Web Audio API. Set start and end points, preview the selection, and export a trimmed WAV file.
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What is Audio Trimmer?
The Audio Trimmer is a free, browser-based tool that cuts and trims audio files using the Web Audio API. Load a WAV, MP3, OGG, or M4A file, set a precise start and end point with sliders, preview the selection, and export a clean 16-bit WAV clip — all without installing any software or uploading your file.
Key Benefits
- Trim audio precisely with start and end sliders
- Preview the selection before exporting
- 100% private — files are processed locally and never uploaded
- No sign-up, no watermarks, completely free
- Exports a standard WAV that works everywhere
Common Use Cases
- •Cut a podcast clip to share on social media
- •Trim long voice memos down to the important part
- •Create a custom ringtone from a favorite song
- •Remove silence at the start or end of a recording
- •Extract a short sample from a music track for a project
How to Trim Audio
- Upload your audio: Drag and drop an audio file (WAV, MP3, OGG, M4A) onto the upload area, or click to browse and select it.
- Set the trim region: Use the Start and End sliders to mark the beginning and end of the clip you want to keep.
- Preview the selection: Press Play to listen to the selected region. Use the Start button to replay it from the beginning.
- Download: Click "Trim & Download WAV" to export and save the trimmed clip instantly to your device.
Key Features
- Drag-and-drop upload for WAV, MP3, OGG, M4A and more
- Precise start and end sliders for frame-accurate trimming
- Play and pause to preview the selected region before export
- 100% client-side — your audio never leaves your browser
- Exports a standard 16-bit WAV file with one click
Frequently Asked Questions
Are my audio files uploaded to a server?
No. This tool uses the Web Audio API to decode and trim audio entirely in your browser. Your file never leaves your device.
What audio formats are supported?
Any format your browser can decode via the Web Audio API — typically WAV, MP3, OGG, M4A, and FLAC. The exported result is always a 16-bit WAV.
Can I trim the middle of a song and remove the intro?
Yes. Set the Start slider to where you want the clip to begin and the End slider to where it should end, then export. The regions before Start and after End are discarded.
Does the trim affect audio quality?
The selected region is copied sample-for-sample from the original audio buffer and re-encoded as 16-bit PCM WAV. No lossy compression is applied during trimming, so the selection keeps full quality.