In GIMP, you can use the Zoom tools, the preset Zoom levels, and other features available in the Zoom menu to Zoom in or out of your photos.

How to Add Someone in a Picture With GIMP. You can cut out a person from a photo in GIMP ...

I needed to remove the white background from several hundred images in PNG format and replace it with transparency. I know you can automate Photoshop but that’s like getting into a Sherman tank ...