Volume booster

How it works

1. 1

   Add your file

   Drop a video or audio file. It stays on your device.

2. 2

   Set the volume

   Slide from 10% to 400%. Press play, the preview is exactly as loud as the file you'll download.

3. 3

   Download

   Save the boosted file. The picture is copied untouched, so it's fast.

Why nothing uploads

Other tools send your video to their servers, which costs them money per file, so they add watermarks, cap file sizes, and make you sign up. This tool does the work right here in your browser using your own device. Your file is never uploaded, so there is no wait, no watermark, no size limit, and no account.

Questions

How much louder can it go?

Up to 400% (about +12 dB). You can also turn a too-loud clip down, all the way to 10%.

Will boosting distort the sound?

Very loud passages can clip when pushed hard. Use the live preview, it plays at the exact gain you've set, so what you hear is what you get.

Does boosting re-encode the whole video?

No. Only the audio track is processed; the video stream is copied bit-for-bit, which keeps quality perfect and makes it quick.

Can I boost an MP3 or other audio file?

Yes. Drop an audio file and you'll get a boosted M4A back.

Does my file get uploaded?

No. The boost happens in your browser; your file never leaves your device.

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