Dielines usually fail on marking, not measurement
What goes wrong on a packaging dieline is rarely the dimensions; it is the line work. Draw a fold as a solid line and the cutting die will cut it. Mix everything onto one layer and the printer comes back asking which line is which. Running through the marking rules first is faster than a reprint.
What the checks are based on
The items collect the marking conventions commonly required across print and packaging work: solid for cut, dashed for fold, creases kept separate, bleed outside the cut line, and no artwork on glued panels. The arithmetic is deliberately narrow, adding bleed and safe margin into a single per-side allowance. Current as of October 2026.
Limits and disclaimer
Deriving dieline dimensions from product size is not supported, and no recommended bleed or safe-margin figures are offered. Structural suitability and stacking strength are not assessed, so the final cut lines must be matched against the printer drawing and approved.
Frequently Asked Questions
No. Turning product size into dieline width and height is not what this does. It covers marking-rule checks plus bleed and safe-margin arithmetic only.
That depends on the structure, the press and the accuracy of the cutting die, and no single recognized figure exists. Enter the values your printer specified and the per-side total is returned.
No. This list collects the markings most often left out; it does not judge whether the structure itself works. Final cut lines still have to be matched against the printer drawing and approved.