Audio tool
Trim Silence
Automatically remove quiet lead-in and tail from audio.
Trim Silence workspace
Workspace
Trim Silence
Drop an audio file
or · MP3, WAV, M4A, OGG
Audio is decoded with the Web Audio API and exported as uncompressed WAV. MP3 export is intentionally avoided; WAV keeps the result lossless and local.
Load audio, then process it on this device.
The guide
By the utils.sbs team · Reviewed November 2026 · How we build and review tools
Quick answer
Trim Silence is a free browser-based audio tool. Automatically remove quiet lead-in and tail from audio. It runs with the Web Audio API locally, requires no account and does not upload your files. Open the page, add your input, adjust any options and download the result.
What is Trim Silence?
Trim Silence is a free browser-based audio tool from utils.sbs. Automatically remove quiet lead-in and tail from audio. It is built for quick, focused jobs: open the page, add your input, adjust the options and take the result with you. No account, install or server upload is required.
At a glance
| Category | Audio |
|---|---|
| Input | MP3, WAV, OGG, M4A or another browser-decodable audio file |
| Output | A WAV or converted audio file |
| Engine | the Web Audio API |
| Processing | In your browser |
| Price | Free |
| Account | Not required |
How Trim Silence works
Audio is decoded with the Web Audio API, processed with standard digital-signal operations, and encoded back to WAV in the browser.
How to use Trim Silence
- 1Open Trim Silence and add your input.
- 2Adjust the options: silence threshold, keep padding.
- 3Run the tool, check the preview or result, and download the output.
When to use Trim Silence
- Trim, fade or join recordings into one clean file.
- Normalise volume or change the speed of a clip.
- Convert audio to WAV for editing or archiving.
Inputs and options
- Silence threshold
- Set this value before running the tool.
- Keep padding
- Enter a numeric value in sec.
Limitations
Browser codec support varies. WAV is used for export where predictable, uncompressed output matters.
Privacy and accuracy
Trim Silence processes its input in the browser whenever the platform API allows it. Files and values are not uploaded to a server for processing, and the tool does not require an account. For calculations, use the result as a reference and verify important decisions against the source formula or a qualified professional. Read our methodology.
FAQ
Trim Silence questions
What can I do with Trim Silence?
Automatically remove quiet lead-in and tail from audio. Trim Silence is part of the Audio shelf on utils.sbs and is designed for quick, one-off tasks.
Is Trim Silence free to use?
Yes. Trim Silence is free, requires no account, and has no per-file or per-use charge.
Are my files uploaded when I use Trim Silence?
No. Trim Silence is designed to process your input locally in the browser. Files are not uploaded to a server for processing.
What formats does Trim Silence support?
It accepts audio formats your browser can decode and exports a downloadable WAV or converted file.
Can I use Trim Silence on my phone?
Yes. Trim Silence is responsive and works in modern mobile browsers. Very large files may be limited by the device's available memory.
Keep going
Related audio tools
- Audio TrimmerCut a precise section from an audio file and download WAV.
- Audio ConverterDecode MP3, M4A, OGG or WAV and export a clean WAV file.
- Audio Speed ChangerSpeed up or slow down audio while changing pitch naturally.
- Reverse AudioPlay any sound backwards and export the reversed WAV.
- Audio NormalizerRaise quiet recordings to a consistent peak level.
- Audio Volume BoosterAmplify or attenuate audio with headroom protection.