Normalize Audio
Even out the loudness of an audio file to broadcast-standard levels using EBU R128 normalization. This ensures consistent volume across different recordings and playback environments. SnapOtter processes everything on your own server.
Features
- EBU R128 loudness normalization to -14 LUFS broadcast standard
- Two-pass analysis for accurate loudness measurement and correction
- True-peak limiting to prevent digital clipping during normalization
- Supports MP3, WAV, OGG, FLAC, and AAC audio formats
- Runs entirely on your own self-hosted server with no external processing
What you can do
- Normalize podcast episodes so all episodes play at the same comfortable volume
- Prepare audio files for radio broadcast compliance with EBU R128 standards
- Even out volume differences between speakers in a multi-guest recording
- Standardize loudness across a music library for consistent playlist playback
Self-hosted. Your files never leave your network.
SnapOtter runs entirely on your own infrastructure. Files processed with Normalize Audio are never uploaded to third-party servers. Deploy a single Docker container and process files with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.
Frequently asked questions
- What loudness target does normalization use?
- SnapOtter normalizes to -14 LUFS following the EBU R128 standard, which is the target used by major streaming platforms like YouTube and Spotify. This ensures your audio sounds consistent everywhere. Processing runs on your server.
- Is normalization the same as compression?
- No. Normalization adjusts the overall loudness of the entire file to a target level. Dynamic range compression changes the ratio between quiet and loud parts. Normalization preserves the original dynamics. All processing happens locally on your server.
- Can I normalize multiple files at once?
- Yes, SnapOtter supports batch processing. Each file is analyzed and normalized independently to the target loudness. This ensures consistency across all files. Processing runs on your own infrastructure.
Ready to try Normalize Audio?
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