In digital prepress, the test used to evaluate or analyse every component needed to produce a printing job. Pre-flight confirms the type of disc being submitted, the colour gamut, colour breaks, and any art required (illustrations, photographs, etc.), plus layout files, screen fonts, printer fonts, EPS or TIFF files, laser proofs, page sizes, print driver, crop marks, etc.
Pre-flighting is a term used in the printing industry to describe the process of confirming that the digital files required for the printing process are all present, valid, correctly formatted, and of the desired type. The term originates from the pre-flight checklists used by pilots.