03-31-2023, 09:07 AM
Quote:...snip...This time I tried that and the images are coming out a little too big and won't line up with my enclosure.
This comes up often. First some general stuff.
While Gimp is a raster editor and works in pixels, printing is the one time where inches or millimeters comes into play.
The default page sizes in Gimp, A4 , USLetter... come with a printing resolution of 300 pixels-per-inch (ppi)
Drop (copy/paste or open as layer) an image and it takes the ppi property from the canvas.
Windows Gimp is not great for printing and it is not the whole story, there is also the printer manufacturers software to consider.
Assuming metric units and A4, your transfer paper might be USLetter, principle is the same.
It is unusual for the print to be larger, more often the print shrinks due to an A4 image not fitting on an A4 sheet of paper. However:
Example 1.
Two images each correct size and 300 ppi dropped into an A4 canvas. Due to margins imposed the printing resolution is not 300 ppi.
Not a complete fix but it helps if you change the Gimp Theme to "System" which shows the "ignore page margins"
Example 2.
The original A4 canvas trimmed to a smaller size, about 30mm off the edges. The images, still correct size and 300 ppi dropped into the canvas. The print resolution is now the same size as the canvas, 300 ppi and the images print at the correct size. Check with the printer software that scaling is off.
In summary, make a canvas a little smaller than your transfer paper. Make sure canvas ppi and image ppi match.