Audio Trimmer Online
Trim an audio file down to the exact section you need, entirely inside your browser.
How does this trimmer work?
Your audio file is decoded into raw sample data using the browser's Web Audio API, and the Start/End sliders select the exact range to keep. Trimming copies only that range of samples into a new audio buffer and re-encodes it as a WAV file — no re-encoding artifacts from the original compression carry over.
GuideHow to use it
Features & benefits
Why this runs entirely in your browser
Audio files can contain personal recordings, so nothing is uploaded to a server. Decoding, trimming, and re-encoding all happen locally using the Web Audio API, directly in the tab.
Common uses
Cutting a long recording down to the relevant clip, removing silence from the start or end of a voice memo, or extracting a short sound effect from a longer file.
Frequently asked questions
A few things people usually want to know before trusting the numbers.
The trimmed result is always saved as WAV, since that format can be written directly by the browser without needing an external encoding library.
No. The samples in the range you keep are copied directly from the decoded original — trimming itself doesn't apply any additional compression.
There's no limit set by the tool — the practical limit is your device's available memory, since the whole file is decoded before trimming.
Yes — after trimming and downloading one clip, adjust the Start and End sliders again and click Trim to produce another clip from the same uploaded file.
No. All trimming happens locally in your browser. Nothing uploaded here is sent to a server, stored, or shared.