Drop Audio Files Here
Supports WAV and MP3. AIFF compatibility depends on your browser.How to Use the Loudness Preview Tool
Analyze your audio and experience real-time loudness normalization behavior.
Drag & Drop
Drop audio files into the area above. This tool supports WAV and MP3, with AIFF compatibility depending on your browser. Waveforms and Integrated LUFS will be displayed automatically.
Click to Play
Click any position on the waveform to start playback. Compare multiple tracks instantly to hear loudness differences between different mixes.
Preview Normalization
Enable "Normalize ON" to simulate streaming platforms (e.g., -14 LUFS). Experience how heavily limited tracks translate compared to dynamic ones.
View Gain Adjustment
See the real-time gain offset (e.g., -10 LUFS → -4 dB). This shows exactly how much the level is adjusted to meet the target.
About This Tool: A lightweight, browser-based analyzer built for educational purposes. It approximates the ITU-R BS.1770 standard to demonstrate real-world streaming environments.
What is this loudness preview tool?
This web tool lets you preview how your audio changes with loudness normalization using LUFS standards. You can instantly compare playback at targets like -14 LUFS and -16 LUFS.
Why loudness normalization matters
Streaming platforms such as Spotify and YouTube normalize audio levels. This tool helps you understand how your mix translates after normalization.
Supported formats
Supports WAV and MP3. AIFF compatibility depends on your browser. All processing runs locally in your browser to ensure maximum privacy and speed.
Notice
This tool is designed for quick preview purposes. For precise LUFS analysis or batch processing with CSV reporting, please use our desktop applications.