If you are creating custom full-page bleed pages using external software, follow the guidelines below to set your page dimensions:
Landscape Classic Custom Photo Books
8x6 = 2400 pixels wide by 1800 pixels tall
Landscape Classic Custom or Seamless Lay-flat books
11x9 = 3300 pixels wide by 2700 pixels tall
14x11 = 4200 pixels wide by 3300 pixels tall
Square Classic Custom or Seamless Lay-flat Photo Books
8x8 = 2400 pixels wide by 2400 pixels tall
12x12 = 3600 pixels wide by 3600 pixels tall
5x5 = 1500 pixels wide by 1500 pixels tall
5x4 = 1500 pixels wide by 1200 pixels tall
Keep in mind that during the production process, 1/8" to 1/4" of the edge of the page may be cropped. This area is indicated by the dashed lines at the edges of the pages and in the center of some book styles. Be sure to keep important image details out of this area. If you are ordering lay-flat pages, there is no cropping at the center of the spread but there is a seam for the Classic Custom books with lay-flat pages or a fold line for the Seamless Lay-flat books so we don't recommend putting important details in the center seam.
We recommend having either an image or background covering the full crop area to avoid having any white border on the page or cover, but at the same time keeping important details out of this area. You can see more about "wrapping" on the Seamless or Custom covers here.
The crop zone will display by default when you view your book in Preview mode.