Trim Audio
Trim Audio cuts a track down to a chosen start and end point on an interactive waveform — perfect for grabbing a clip, removing silence, or making a ringtone. Everything runs in your browser with FFmpeg.wasm, so your audio is never uploaded.
Your audio
The work runs in this tab. Nothing is sent anywhere, and the download is generated locally.
Output —Load audio
How to use Trim Audio
- 01Upload
Add your audio
Drop an MP3, WAV, AAC, OGG or FLAC file in and its waveform is drawn.
- 02Customize
Set the range
Drag the handles on the waveform or type exact times to select the part to keep.
- 03Process
Download
Export to save the trimmed audio in its original format.
Which part is going?
- The count-in, or dead air at the endsTrim Audio
- Every pause throughout the recordingRemove Silence
- The file is too big, not too longCompress Audio
Cutting cleanly
A cut in the middle of a waveform's swing leaves a step in the signal, which is heard as a click. Cutting where the wave crosses silence avoids it.
Where an exact cut point matters more than the click, a few milliseconds of fade at each end removes the discontinuity without audibly shortening anything.
What you remove does not come back
Audio outside your in and out points is not written to the exported file.
Export to a new file and keep the source. Every tool here works from the file you drop in and writes a fresh one, so the original on your device is untouched — but only if you do not overwrite it yourself afterwards.
Supported formats
- MP3
- WAV
- M4A
- OGG
- FLAC
- Maximum file size —
- bounded by your device's memory
- Processed by —
- FFmpeg (WebAssembly), on your device
Your file, and what the page does
Your file is never uploaded. Trim Audio reads it into this browser tab and processes it with FFmpeg compiled to WebAssembly on your own device. There is no upload endpoint in the application and no copy on any server — closing the tab discards it.
That is also why processing takes longer here than on a site that uploads: your device is doing the work rather than a rack of servers. The trade is that the file never leaves it.
What the page does send or fetch
- The processing engine, once
- The first time you use any video or audio tool, the browser downloads the FFmpeg WebAssembly build (~30MB) from the jsDelivr CDN and reuses the cached copy afterwards. That is a file coming to you — no part of your own file is in the request.
- Ads on the page
- The site is funded by advertising, so the page loads Google AdSense. That carries the usual web basics — IP address, browser, referring page — as on any ad-supported site.
- An anonymous usage counter
- When Trim Audio finishes we record that the tool ran, whether it succeeded and how long it took. No file data, no identifier, no cookie.
Your file is not on that list. How this works.
Frequently asked questions
MP3, WAV, AAC, OGG and FLAC are all supported, and the output matches your source format.
Yes — play the selected range to hear exactly what will be exported.
The selected range is exported cleanly at high quality, keeping the sound faithful to the original.
Yes — Trim Audio is completely free. There's no account, sign-up, watermark or limit.
No. It runs in any modern browser — Chrome, Edge, Safari, Firefox, Brave — with nothing to download or install.
Not sure trimming is what you need?
- Pauses throughout, not just the endsRemove Silence
- Too large rather than too longCompress Audio
- Levels are unevenNormalize Audio
Edit any media with a right-click
Add Dexta Studio to Chrome and open any image, video, audio or PDF straight into the right tool — free, nothing uploaded.