MasteringLocal
Browser Native Web Audio Mastering / 01

Loud. Clean.
Still yours.

Professional non-destructive mastering running 100% in your browser. True Peak oversampling, LUFS metering, YIN pitch transcription, zero cloud uploads.

Drop audio track here

WAV, MP3, FLAC, OGG, AIFF · Max 200MB

No Track Loaded

-- kHz · -- bit PCM

00:00 / 00:00

DSP Mastering Chain

Target -14 LUFS

Streaming Standard

Optimized for Spotify, Apple Music & Tidal.

Target -8 LUFS

Heavy Club Punch

Maximum loudness, tight sub-bass punch.

Target -12 LUFS

Warm Analog

Smooth high-end roll-off with saturation.

Target -16 LUFS

Audiophile Pure

Zero colorization, dynamic preservation.

Stem Isolation Studio

Pro Feature

4-Stem Neural Separation (Vocals, Drums, Bass, Other).

Local AI WebGPU Hardware Acceleration (Coming Soon)

Stem separation requires the Pro Engine WebGPU models. Your audio is processed 100% on device with zero cloud server uploads.

Vocals Stem
Drums Stem
Bass Stem
Instruments

Music Transcription Engine

Algorithmic YIN pitch analysis, Chromagram key profiling, and Standard MIDI generation.

Estimated Pitch

--

Upload audio to detect
Tempo / BPM

-- BPM

MIDI & Score Export

Detected Harmonic Progression

No audio buffer loaded for harmonic analysis.

Deep Audio Analysis

ITU-R BS.1770 / EBU R128 LUFS metering & True Peak oversampling.

Integrated LUFS

-- LUFS

Dynamic Range (PLR)

-- LU

True Peak (4x)

-- dBFS

Batch Processing Queue

Master full albums and EP tracks with consistent DSP mastering curves.

Batch queue empty. Drag multiple files here to start.

Export Center

Client-side rendering to high-resolution PCM audio files with noise shaping.

WAV PCM Bit Depth

24-bit PCM / 16-bit PCM / 32-bit Float

16-bit Standard

TPDF Noise Dithering & Shaping

Psychoacoustic noise shaping applied to quantization

Active

Memberships & Commercial Access

Choose your local processing license tier.

Standard Engine

Local Free

Unlimited local browser audio mastering.

$0 / forever
Commercial License

Pro License

Full access to stem isolation, batch queues, and support.

Gumroad Direct

Platform Features

Commercial-grade DSP in Web Audio API.

Info & Support

Zero cloud uploads. 100% Client side processing.

Changelog

Version 1.0 (RC1) - Enterprise Audio Engine Deployed.