Audio Mastering
Master a song in one click: the track is measured, every decision is explained, and you can compare before and after.
or drag & drop your file directly here
Files are processed locally in your browser and never uploaded to any server.
How to use Audio Mastering
Follow these simple steps to process your files in seconds.
Choose a track
Select a song or mix as WAV, MP3, M4A, OGG or FLAC.
Keep Auto or adjust
Leave the settings on Auto, or set your own loudness, bass and treble.
Master and compare
Press "Master Track", switch between Original and Mastered at matched loudness, then download a 24-bit WAV.
Frequently Asked Questions
Is my track uploaded?
No. Measuring and mastering both happen in your browser.
What does it do to my track?
It measures loudness, peaks, dynamics, tone and stereo width, then applies EQ, de-essing, compression and limiting based on what it measured. The page lists the reasons.
What does matched loudness mean?
Louder usually sounds better, which hides real differences. Matched loudness plays both versions at the same level so you can judge the sound itself.
Does it replace a mastering engineer?
It is a good quick master for demos and uploads. For an important release, a human engineer can still make choices that automatic tools cannot.