Benjamin O'Steen wrote: > The easiest way to create these at the moment, is to use OpenOffice 3 > and choose the "Save As PDF" and tick the PDF/A option. Is there some free software that can verify if a given PDF file really is a valid PDF/A file? If I want users to upload their documents to an archival webserver, I don't want them to upload bad files that aren't standards compliant and safe for the future. The web server needs to run a check, hopefully in less than a second and using predictable amounts of RAM. Or how do you typically solve that problem? Can PDF/A documents contain scanned images with OCR text? -- Lars Aronsson ([log in to unmask]) Aronsson Datateknik - http://aronsson.se