Booklet and brochure artwork should have a 3mm bleed when the artwork features a solid colour going right to the edge of the page. To create a bleed, simply extend the colour 3mm over the edge of the job ensuring your PDF page size is large enough to accommodate this. Alternatively, bleed can be added in the settings of your design software.
If you have an image, such as a photograph, which reaches the edge of your page, please move this image 3mm off the page edge to create the required bleed, bearing in mind that this 3mm will be chopped off.
Your software may only generate bleed on 3 edges which is suitable when all odd numbered pages need bleed on the top, bottom and right-hand edges, while even numbered pages need bleed on the top, bottom and left hand sides.