GWG Releases First Universal “Proof of Preflight” Specification

This capability provides users the assurance that they can safely accept a PDF file with a Proof of Preflight. The process verifies which GWG preflight specification was used to preflight the file and also the outcome of the preflight check.

Another feature of the GWG Proof of Preflight specification is its “open” design, making it interoperable across different vendor workflows. GWG designed the digital signature using algorithms which are defined in the PDF 1.7 (or earlier) specification(s), and which are supported in Acrobat as of Acrobat 8. The digital signature complies with all requirements present in the PDF/X-1a and PDF/X-3, and PDF/X-4 standards.