Dieline is a critical vector graphic file that specifies the final structural pattern of a printed product (packaging) and includes all cut lines, fold lines, and perforations. The Dieline serves as the two-dimensional blueprint, guiding the designer for visual content layout, and is ultimately converted into a physical mold.

Accuracy in drawing these lines is vital, as a key application of the Dieline is its use for three-dimensional Mockup creation. Specialized plugins and software like IC3D or ESKO DeskPack in the Illustrator environment use these exact vector paths for digital modeling. Therefore, these paths must be created in vector software like Adobe Illustrator or structural packaging software like ESKO ArtiosCAD to guarantee maximum precision.