> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bibigpt.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Free Online Audio Volume Booster

> Boost audio volume up to 300% or auto-normalize loudness in your browser. Supports MP3, WAV, FLAC, OGG. 100% local processing, no upload needed.

## Overview

The free online audio volume booster amplifies audio up to 300% of the original level, or uses auto-normalization for consistent loudness. Supports MP3, WAV, FLAC, OGG, and more. Everything runs in your browser — files never leave your device. Choose from presets between 50% and 300%, and finish in three steps.

## Pain Point

Quiet meeting recordings, inconsistent podcast levels, barely audible lecture captures — you need to boost volume quickly without installing professional audio software. This tool does it instantly in your browser.

## Key Features

* Boost volume up to 300% or auto-normalize to consistent loudness
* Multiple presets from 50% to 300%
* Supports MP3, WAV, FLAC, OGG formats
* 100% browser-based processing, no server upload
* Free, unlimited, no sign-up required

## Highlights

The auto-normalize feature is perfect for making multiple audio files consistent — it brings varying volume levels to a uniform standard without manual adjustment per track.

## Use Cases

* **Podcasters**: Unify volume across episodes for a better listener experience
* **Recording Recovery**: Boost quiet meeting, lecture, or interview recordings to audible levels
* **Music Production**: Level match tracks before mixing to ensure consistent loudness

## Tips

* Start with 150% and increase gradually to avoid distortion from over-amplification
* Auto-normalize mode is ideal for batch processing multiple audio files

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**Related**: [Free Audio Noise Remover](https://bibigpt.co/features/free-audio-noise-remover) — Try it now

**Upgrade to Pro**: Unlock unlimited access → [View Pricing](https://bibigpt.co/pricing)

## Related Features

<CardGroup>
  <Card title="Free Audio Noise Remover" href="/en/function-usage/platform-function/free-audio-noise-remover" />

  <Card title="Free Audio Speed Changer" href="/en/function-usage/platform-function/free-online-audio-speed-changer" />

  <Card title="Free Silence Remover" href="/en/function-usage/platform-function/silence-remover" />
</CardGroup>