Why is trimming in the print data important?

Adding trim to your print data is important to ensure that your folding box does not have any white borders or unwanted edges.

Adding trim to your print data is important to ensure that your folding box does not have any white borders or unwanted edges. The bleed is the area around the actual print motif that is cut off after printing. It ensures that the image extends to the edge of the paper without any unwanted gaps or edges.