Unfortunately we do not support bleeds on the interior pages. We recommend that you leave all images, photos, illustrations, graphics, text, background colors, etc. at least 0.125” from the edges. If you upload a PDF with bleeds the books may end up with a white line between the object and the edge of the paper.
Usually a printer will ask that you include around 0.125” to 0.25” for the bleeds, which is called the bleed allowance, to allow for shifting when trimming to the final size. Since we require your PDFs to be the exact size as the final book size we do not have the bleed allowance to ensure the bleed will be trimmed out properly.