This is Amazon Publishing templates, which are based on Adobe Illustrator, a vector application.
Gimp is a pixel (raster) editor so @ 300 pixels-per-inch (ppi) 7.625 inches = 2287.5 pixels and of course you can not have half a pixel it gets rounded up and you get 2288 pixels. This is insignificant, a 0.02 percent difference. Leave your work as-is.
Too late now but you should have started off with a ppi value that is a match with 7.625" 200 ppi works (1525x2050 pix) so does 400 ppi (3050x4100 pix) but image size / quality is up or down.
Example of scaling. You will lose text layer properties. https://i.imgur.com/Qegas1j.mp4
Putting layers into a layer group. There are scripts for this. Some references here: https://www.gimp-forum.net/Thread-Layer-...2#pid21052
Example using the saulgoode script: https://i.imgur.com/ViXhPPh.mp4
A note on output. You probably want a PDF. The best way is start and finish using DTP such as Scribus where text and images are embedded. Gimp will make a PDF but it will be large, it is a bitmap in a PDF wrapper. A smaller PDF made using command line ImageMagic and your 140 pages exported as jpegs. ..But that is another story...
Quote: can only get 7.623 x 10.250 or alternatively 7.627 x 10.250. At 300 x 300 ppi, I cannot get 7.625 width.
Gimp is a pixel (raster) editor so @ 300 pixels-per-inch (ppi) 7.625 inches = 2287.5 pixels and of course you can not have half a pixel it gets rounded up and you get 2288 pixels. This is insignificant, a 0.02 percent difference. Leave your work as-is.
Too late now but you should have started off with a ppi value that is a match with 7.625" 200 ppi works (1525x2050 pix) so does 400 ppi (3050x4100 pix) but image size / quality is up or down.
Example of scaling. You will lose text layer properties. https://i.imgur.com/Qegas1j.mp4
Quote:I have to do this process 140 times (there are 140 pages to do), and each page tends to have multiple png and text layers, so I'm wondering if there is a quick way to get a bunch of layers simultaneously into a layer group, instead of having to put one layer at a time into the layer group.
Putting layers into a layer group. There are scripts for this. Some references here: https://www.gimp-forum.net/Thread-Layer-...2#pid21052
Example using the saulgoode script: https://i.imgur.com/ViXhPPh.mp4
A note on output. You probably want a PDF. The best way is start and finish using DTP such as Scribus where text and images are embedded. Gimp will make a PDF but it will be large, it is a bitmap in a PDF wrapper. A smaller PDF made using command line ImageMagic and your 140 pages exported as jpegs. ..But that is another story...