Bleed Area:
If your document prints to the edge of the finished size, we will need an additional 1/8” bleed. For example, a postcard file with a trim size of 4×6 will actually be designed as 4.125×6.125.
Specifically, the ‘bleed’ refers to printing that goes beyond the edge of the sheet before trimming. It’s also the part on the side of a document that gives the printer a small amount of space to account for movement of the paper, and design inconsistencies. Artwork and background colors can extend into the bleed area.
Crop Marks:
This is where the final edge is cut during production.
Safety Area:
The safety margin guarantees images or text won’t be cut away due to printing or trimming errors.