Prepress is the process that includes all the steps required to prepare print data for the actual printing process. This involves design, layout, image editing, color correction, and converting files into print-ready formats (such as PDF). Additionally, the prepress process involves checking all technical details, such as resolution, color profiles, bleed, and the correct arrangement of print sheets. A well-executed prepress process ensures that the final print results match expectations exactly and prevents errors that could lead to quality issues or increased costs.