Die line

A die line is the precise geometric path followed by a cutting die, establishing the final physical dimensions of a printed piece. In the context of business cards and other small-format items, this line dictates where the blade or laser will sever the substrate to create the finished edge. For standard rectangular cards, the die line corresponds directly to the trim size, ensuring uniformity across a print run.

The die line is distinct from the bleed area; while bleed extends beyond the cut to prevent white slivers, the die line marks the exact boundary of the usable surface. Designers must ensure that all critical text and logos remain within the safe zone, well inside the die line, to avoid accidental cropping during the cutting process. Accurate die lines are essential for maintaining registration and ensuring that the physical product matches the digital proof.