Launching today

Mastering.to
Quality control for your masters
3 followers
Quality control for your masters
3 followers
Mastering.to is a free browser-based audio mastering quality control tool. Analyze loudness (LUFS), true peak, dynamics, stereo width, clipping, and get platform-specific assessments for Spotify, Apple Music, YouTube, vinyl, and 35+ formats.










As an independent artist and mastering engineer, I was frustrated with the free tools available for artists to check their masters and get basic metrics like LUFS, dynamic range, true peak, and more. So, I built Mastering.to first as a free quality control resource for anyone releasing music, and second as a suite of premium tools for artists and engineers needing more specialized tools for analysis of post-rendered audio outside the DAW.
One night when mastering a track for another artist, I realized I didn't have any tools that could provide instant information when loading a track while also being able to A/B with references. To solve this, while also making the most useful and flexible tool possible, I created Mastering.to to use inside or outside the studio. You can run the app on your phone or another device paired to your car audio and A/B up to 24 tunes in your car—functionality I've always wanted but never found anywhere else. I hope you find it useful, and thanks for checking it out!
Been using this a lot for my mixes, super handy that it lives in the browser. One thing that would make it even better is letting me compare two versions of the same track side by side, like an A/B view with the LUFS and true peak values for both at once. Would save me a ton of time when deciding between my own master and an automated one.