8-1-1 Versions Available to be Processed

PDF files that can be handled by Antenna House PDF API are files that comply with the "ISO 32000 (32000-1, 32000-2)" specifications.

8-1-2 PDF Version of Input / Output Files

• You cannot specify an arbitrary PDF version number for the output PDF.
• In principle, the version of the output PDF will be the same as the input PDF.
• If you process multiple files as input PDF, for example by merging PDFs, the PDF version of the output file will be the same as the highest version number among the input files.
• The PDF version may become larger when saving with encryption security set. (*1)

(*1)
When setting encryption security, if the PDF version of the input file is smaller than the PDF version according to the specified encryption type, it will be changed to the PDF version according to the encryption type.