Will boosting cause distortion?

If the original is already near full scale, boosting may clip. Try 1.5x first and increase gradually.

Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

Do I need to sign up or pay?

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

🔊Audio Volume & Speed - Boost Volume, Speed Up or Slow Down Online

Recording too quiet? Boost the volume by 2x or more. Lecture too slow? Play it at 1.5x without changing the pitch. Both adjustments can be applied together.

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How to use Volume / Speed

1Upload an audio file
2Set the volume factor and playback speed
3Click start and download the result

FAQ

Will boosting cause distortion?: If the original is already near full scale, boosting may clip. Try 1.5x first and increase gradually.
Are my files uploaded to a server?: No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.
Do I need to sign up or pay?: No. The site is completely free, requires no account, has no usage limits and adds no watermarks.