New!KDP coloring book interior specs
Trim sizes, the border, the color key, and what has to be true of the PDF before you upload it.
Amazon KDP
Choosing cell size and columns
Mosaicly · October 5, 2026
How a 2 mm cell and a 5 mm cell change the page, and how many columns fit on each trim.
How many colors to use
Mosaicly · October 4, 2026
What palette size does to difficulty, and when to leave the count on Auto.
All 9 cell shapes, compared
Mosaicly · October 3, 2026
Square, rounded, dot, circle, diamond, hexagon, triangle, and mixed, on the same image.
Choosing and preparing a photo
Mosaicly · October 2, 2026
Contrast, a clear subject, and the rights you need before a photo becomes a coloring page.
Recent articles
MosaiclyMaking a color-by-number book for KDP
One setting for the whole batch, then numbered pages and answer pages in a single PDF.
MosaiclySelling what you make
Which plan includes commercial use, and what you still have to check before you publish.
MosaiclyWhat one export includes
The colored page, the numbered page, the palette legend, and the answer pages in the PDF.