New PDF/X Workflow Specifications v4 Released by the Ghent Workgroup

About Universal Proof of Preflight

In Acrobat 9, Adobe was the first to implement the Ghent PDF Workgroup “Universal Proof of Preflight”. In supporting this specification, Acrobat 9 further improves communication between designers and production by offering a preflight audit trail. This provides information on whether a preflight has been carried out, which specification was used and what the outcome of the verification was for a specific PDF. In addition, the user can verify whether the file has been altered since the preflight was last executed. The process provides more transparent file exchange and avoids having to preflight files in different stages of the workflow.