Release notes

v0.1.4 - v0.1.52023-11-19/20

- UI tweaks

v0.1.32023-11-17

- Added more info.

- Correct width on small screens.

v0.1.22023-11-14

- Added keyboard shortcuts:

  • Space - Play/pause
  • s - Switch selected audio file
  • 1 - Select audio file 1
  • 2 - Select audio file 2

v0.1.12023-11-13

- Bugfixes

v0.1.02023-11-10

- First release!


Stockholm Mastering logo Stockholm Mastering logo

Check your masterBETA

Compare your master to the original mix – with loudness matching!


Loudness Warning

Changing the loudness target can result in the output suddenly being much louder.

Make sure to adjust your volume control accordingly to avoid potential hearing damage.

I have been warned. Do not show this message again.


Drop the master here!

Drop the mix here!

Loudness target:
Sync playback
Auto-align (experimental)

Note: This web-app runs locally in your browser and nothing is uploaded to any server.

Keyboard shortcuts

  • Space - Play/pause
  • s - Switch selected audio file
  • 1 - Select audio file 1
  • 2 - Select audio file 2

Please send bug reports, feedback and/or appreciation to info@stockholmmastering.se