Simple macOS menu bar app to quickly switch display resolutions on an ultrawide monitor, specifically those supporting Picture-By-Picture (PBP). The utility allows you to quickly adjust the resolution for full-width display, or half-width when using two sources in PBP mode.

./build.sh

open Resoluter.app

Click the monitor icon in your menu bar:

• Full Width (3440x1440)
• Half Width (1720x720)

Drag Resoluter.app to System Settings → General → Login Items

• macOS
• displayplacer installed at /usr/local/bin/displayplacer