Trim audio: help & limits

1. Choose a supported audio file.
2. Set Start and End in seconds. Use Preview segment to listen.
3. Choose Save segment, then download the WAV.

Examples

• Keep seconds 12–24 of a voice recording for a presentation.
• Cut silence from a short WAV by selecting seconds 0.5–3.2.

Downloads WAV only, even when the original is MP3. The cut is rounded to the nearest decoded sample at 48 kHz. Hard cuts can click at the boundary; no fade or crossfade is applied. Output is 16-bit PCM with up to two channels. Tags and artwork are not copied; trimming is not a privacy guarantee for spoken content.

One file, up to 50 MiB and 10 minutes. Mono or stereo only. Browser decoding support varies, especially for unusual WAV encodings or damaged MP3s. A low-memory device may fail within these limits. There is no server fallback.

Duration is checked before decoding and checked again afterward. Decoded samples are limited to 256 MiB. Decoding uses browser memory; malformed metadata can bypass the first duration check. Encoding runs in a worker. Cancellation discards the result and closes the decoder, but the browser may finish an already-running decode internally.

File bytes, names, and audio samples stay in browser memory. No recording is uploaded, logged, or saved in browser storage. Downloads stay wherever you save them. Reset releases previews and results; it does not securely erase RAM.

If decoding fails, choose an original file or try an updated browser. If a download opens in a player, use your browser’s Save or Share action. Keep the original until you have checked the output.

Not in this version. The result is a WAV. The original file remains unchanged.

A short uncompressed WAV can be larger than a longer compressed MP3. Trimming controls duration, not necessarily file size.