Audio Volume Normalizer - Free Offline Tool (No Upload)
Normalize audio volume in your browser. 100% offline - no upload, no account, no data sent to any server. Free.
No Upload
100% Private
Free
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Loading Audio Processing Engine
Uses FFmpeg.wasm. First use downloads ~25MB (cached after).
Initializing...
Drop your audio file here
or click to select an audio file
1.0x
0.5 = half volume, 1.0 = normal, 2.0 = double volume
Processing audio...
Normalized Audio
Frequently Asked Questions
What is audio normalization?
Normalization adjusts the overall volume level to a consistent loudness. Use this to fix quiet recordings or inconsistent audio levels.
Does this tool work offline?
Yes. FFmpeg.wasm runs entirely in your browser. Your files never leave your device.
What's the difference between auto and manual mode?
Auto mode uses intelligent loudness normalization based on perceived volume. Manual mode lets you multiply the volume by a factor.