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Toolshed

Volume Booster

Make audio or video louder or quieter by dB or %, or normalize peak or loudness, with a clipping limiter. Runs in your browser.

  • No uploads
  • No limits
  • No signup

Drop an audio or video file here

MP3, WAV, M4A, FLAC, OGG, MP4, MOV, WebM and more

Input:
Audio · Video
Output:
Louder audio
Runs on:
Your device
Size limit:
None
Account:
Not needed

How to use Volume Booster

  1. Add your file

    Drop an audio file (MP3, WAV, M4A, FLAC, OGG…) or a video (MP4, MOV, WebM). It never leaves your device.

  2. Choose how loud

    Boost or lower it by dB or percent, or let the tool normalize the peak or the loudness for you. Preview the first 15 seconds.

  3. Download

    Press Change volume and save the result in the same format as the original.

Why Volume Booster on Toolshed

  • No uploads

    Everything runs in this browser tab. Your files never leave your device.

  • No limits

    No file-size caps, no daily quotas. Process as much as your device can handle.

  • No signup

    No account, no email, no watermark.

Frequently asked questions

Will boosting the volume cause distortion?

Pushing a loud file further can clip its peaks, which sounds harsh. Keep "Prevent clipping" on: a limiter holds the peaks at −1 dB while the rest gets louder. Very large boosts can still sound squashed, so preview first.

What is the difference between peak and loudness normalization?

Peak normalization raises the whole file evenly until its loudest moment reaches −1 dB, so the dynamics stay exactly the same. Loudness normalization (EBU R128, −16 LUFS) matches how loud it sounds to the level podcasts and streaming apps use, which works better for speech and for making several files sound equally loud.

Can I make the sound of a video louder?

Yes. Drop an MP4, MOV, WebM or MKV video: only the audio track is processed and the picture is copied without re-encoding, so quality doesn't change.

Are my files uploaded?

No. Everything runs in your browser with a local copy of FFmpeg. Your audio and video never leave your device.

Are my files uploaded anywhere?

No. Volume Booster runs entirely in your browser. Your files are processed on your device and are never sent to a server.

Is there a file size limit?

No fixed limit. The only limit is your device's memory. Very large files work best in a desktop browser.