I’ve been working on a simplified Substance Painter-style PBR workflow in Blender for models that I’m exporting to Unity, and one of the things that quickly drove me crazy was it not saving images when saving the Blender file.
Well, here’s a simple add-on to fix that! It works by registering for a callback that is made whenever the main Blender file saves. When called, it saves any modified images including internally packed images that have not been saved to an external file.
You can check out my extended rant, info about a related bug when re-saving images, and grab the plug-in at the add-on’s GitHub repository.