The object is to build a page with sufficient size to allow for a bleed if desired. We recommend oversizing your page dimension by 0.25 inch on all sides and include a margin of 0.5 inch, to the inside, on all sides. All bleeds should be laid out to the edge of the oversized page on one or all sides and all content inside the 0.5 inch margin will be protected from the trim. Even if there are no bleeds, build the page oversized. This will allow for a bleed to be created at a later date instead of having to resize the piece or page. Even without any bleeds the oversizing will yield the same results.
For example: The finished product will be 8.5 x 11.0 inches. Our recommended page build size is 9.0 x 11.5 inches, including the 0.25 inch oversized dimension. With an 0.5 inch margin on all sides the protected area is 8.0 x 10.5 inches. If the bleed is placed to either or both of the 9.0 and/or the 11.5 inch sides, the excess bleeds will be trimmed off leaving a clean edge for the finished 8.5 x 11.0 inch piece and all protected content is inside the protected area of 8.0 x 10.5 inches.