CommonCrop: one common crop for all your integrated masters, on the area covered by every sub-frame.
Add https://jps-34.github.io/CommonCrop/ under Resources > Updates > Manage Repositories.
Crops a set of integrated masters (L, R, G, B, SII, Ha, OIII and two auxiliary channels) to the one rectangle covered by every sub-frame of every channel, from the masters alone. Reports a field-loss score per filter and checks the noise at the crop edges. Creates new images by default; an option crops the masters in place. English or French interface. Installs under Script > JPS > CommonCrop.
Copyright (c) 2026 Jacques Pouyaud. GNU GPL v3 or later. Source: https://github.com/jps-34/CommonCrop