Kill the dead air. Match the levels. In one pass.
Drop your files: the trimmer finds where each one actually starts and ends, cuts the silence, and normalizes the level — peak for samples, LUFS for spoken word. Batch out as a ZIP.
Free · no account · runs in your browser — nothing is uploaded; your audio never leaves your device.
Clean files are the floor. A clean library is the product.
AudioEncode in the studio runs this across your whole collection and remembers the results — every file trimmed, tagged, and findable forever. Sign up: 3 full packs free.
Why head-and-tail silence matters more than it seems
A half-second of dead air in front of a sample means every drop lands late when you trigger it. Uneven lead-ins across a kit mean nothing sits on the grid. And a folder of voice notes recorded at wildly different levels is unusable until someone levels it. This tool fixes all three in one pass, for up to ten files at a time, and never touches the audio between the first and last real sound.
The two normalization modes exist because "loud" means two different things: peak mode makes the loudest sample hit a target — right for drums and one-shots — while LUFS mode matches how loud material feels, which is what podcast platforms and streaming services actually measure.
How to trim silence from audio files
- Add filesDrop up to 10 audio files on the trimmer.
- Set the thresholdPick -60 dB to keep soft intros, -45 dB as standard, or -35 dB to trim aggressively.
- Choose normalizationLeave it off, normalize peaks for samples, or normalize loudness to -16 or -14 LUFS.
- ProcessPress Trim and normalize all and check each file's waveform.
- DownloadSave the processed files, individually or as a ZIP.
Frequently asked questions
How does the silence trimmer decide what to cut?
It scans from each end for the first moment the level rises above a threshold (default −45 dB, adjustable) and cuts there, snapping to zero crossings with a few milliseconds of padding so nothing clips or pops. Quiet fade-ins survive — raise the threshold if your material starts extremely soft.
What's the difference between peak and LUFS normalization?
Peak normalization raises the whole file so its loudest sample hits a target — perfect for one-shots and samples. LUFS normalization matches perceived loudness — the right choice for voice notes, podcast clips, and comparing songs. The tool offers both.
Can it remove silence in the middle of a file?
This tool trims head and tail only — mid-file gaps are usually intentional in music. For dead-air removal inside podcast episodes, use the Dead-Air Trimmer on poddj.com; it's built exactly for that.
What format comes out?
Uncompressed WAV at the source sample rate, single files directly or batches as a ZIP.