Quality Validation
Tested against professional audio references.
Mastelize's conversion workflow was refined through repeated comparison tests against reference exports from professional audio workflows. Each target format was checked for file length, format metadata, level behavior, and residual signal characteristics.
WAV 48/24
Pro Tools reference export
format, length, residual
Passed internal validation
WAV 44.1/16
DAW export / roundtrip
dither, level, residual
Passed internal validation
MP3 320kbps
DAW MP3 reference
length, level, audible artifacts
Passed internal validation
FLAC
decoded WAV comparison
lossless decode, metadata
Passed internal validation
Workflow
Built for real release work.
Mastelize keeps the repeated export, naming, packaging, and credit-document steps in one focused browser workflow.
Batch conversion
Drop multiple WAV files and export WAV, FLAC, and MP3 targets in one run.
Release naming
Generate filenames from album, title, engineer, artist, type, and extra notes.
Version grouping
Keep original, Inst, and MR variants organized under the same song folder.
Folder or ZIP output
Save directly to a folder in supported browsers, or download a ZIP fallback.
Credit Builder
Credits included.
Create Recording, Mixing, and Mastering credit sheets with your own logo, studio name, and website.
Live document preview
Review the credit sheet in the app before exporting.
Brand settings
Use a custom logo, brand name, and website for each delivery.
PDF / HTML / TXT
Export clean credit files for delivery, archiving, and copy-paste use.
Privacy
Your audio stays local.
Files are processed in the browser. Mastelize does not upload your master audio to a server.