Choose the artboard and page scale first
An Illustrator project may contain multiple artboards, alternates, packaging panels, or draft layouts. Select the approved artwork and check its bounds before export. A PDF page can represent one or several boards depending on the chosen workflow, so verify page count and sequence.
For print, confirm page dimensions, bleed, and marks against the provider's specification. For review, leave enough margin for comments and ensure the design is not reduced to an unreadable size. The file extension alone does not establish press readiness.