Dieline is a technical layout that shows the exact cut lines, fold lines, score lines, and glue areas needed to produce a package or display. It acts as the blueprint for both printing and converting, ensuring the finished piece assembles correctly and fits the product as intended.
Dielines are used for folding cartons, labels, inserts, corrugated packaging, and retail displays, and they must be built to precise dimensions for reliable production. In design files, dielines are typically placed on their own layer and marked clearly so artwork stays within safe zones and critical elements avoid folds, cuts, and glue areas.