I have an image that is 100 x 125 pixels in size.
I'd like to create a new image by repeating the source image, five times, horizontally. (So the new image is 500 x 125.)
The repetitions must be pixel perfect, in exactly the right place. (So I'm less likely to accept an answer that requires placement by eye-balling.)
What's the easiest way to do this using GIMP?