UE4 - Luos's Cropping Tool

Comes with a small guide/Tutorial on how to optimize the use of masks/separate RGB channels even further.

Which can be found here: https://www.youtube.com/watch?v=mzairog7Elw

This can save you between a few up to a few hundred MB per project :)



Additional photoshop tool needed: Crop_E_Assist tool for Photoshop: https://www.dropbox.com/s/sqm4846j80u2pr7/CropEAssist.7z