I am a GIMP beginner and have successfully created images with my desired transparencies in GIMP. However, I have problems with and can't seem to understand the ins-and-outs of image and canvas sizes.
I have multiple images that I exported from another software program at 8.5x11 (US letter). I create a new image canvas in GIMP (File -> New) and set the size to 8.5x11 (US letter), but when I add my images sometimes the image is cropped (essentially zoomed in) and sometimes it is over-centered (zoomed out). I re-size the canvas successfully but can never get the images to fit correctly. Can someone please clarify the fundamental piece of graphic design knowledge I'm missing here?
I have included a couple of my attempts below. Also, it appears these threads are close to the answer I'm looking for, but miss the mark:
This image was added to GIMP with a canvas size of 8.5x11 inches, just at different zoom levels: