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MP3, WAV, OGG, M4A, and more
Automatically cut dead air from a recording — free, no sign-up, nothing leaves your browser.
A raw recording — a voice memo, an interview, a podcast take — is often full of small dead gaps: pauses while someone thinks, silence before a recording properly starts, room tone at the very end. Individually these are barely noticeable, but stacked up across a 40-minute recording they add real, tedious minutes to the final listen. Finding and cutting each one by hand means scrubbing through the whole waveform manually, which is exactly the kind of repetitive task that's easy to automate and hard to do consistently well by ear — a human editor gets tired and starts missing the smaller gaps long before an automated pass would.
Anything quieter than the sensitivity threshold you've set — background hiss, room tone, and pauses between words all count. It's not a perfect science, so always check the preview numbers before downloading.
It can, if sensitivity is set too high for a quiet recording. Try a lower sensitivity first, and re-analyze if the trimmed result feels too aggressive.
The same audio, re-encoded as WAV — lossless, so trimming doesn't add any extra quality loss on top of your original.
It removes silence above your sensitivity threshold wherever it falls, including natural pauses — for speech, this can make the result feel a little rushed if set too aggressively, so it's worth listening back and adjusting sensitivity if the pacing feels off.
No. Everything happens locally in your browser — your file is never sent to a server.
We've noticed an ad blocker is active. Cwtch.es relies on ads to stay free, so audio trimmed while a blocker is active will have a short tone added at the start as a watermark. Disable your ad blocker for this site (or add it to your allow-list) and recheck to trim without it.