The PDF/A tab is used to convert PDF files to PDF/A. It also allows to save the files, print them or send them. The tab has the following sections:
Select the PDF/A format you wish to convert the documents too.
PDF/A-1b: Use of PDF 1.4 to create a “minimal compliance” level for PDF/A. PDF/A-1b requirements are meant to ensure that the rendered visual appearance of the file is reproducible over the long-term. It requires exact visual reproduction only.
PDF/A-2b: A new development of PDF/A to address some of the new feature added with versions 1.5, 1.6 and 1.7 of the PDF Reference. PDF/A-2 is backwards compatible, i.e. all valid PDF/A-1 documents should also be compliant with PDF/A-2. However PDF/A-2 compliant files will not necessarily be PDF/A-1 compliant. Based on PDF 1.7 (as defined in ISO 32000-1) which supports a range of improvements in document technology such as JPEG2000 compression, transparency effects and layers, the embedding of OpenType fonts, and provisions for digital signatures in accordance with the PDF Advanced Electronic Signatures standard. PDF/A-2 also allows archiving of sets of PDF/A compliant documents as individual documents in one file.
Note: The PDF/A-2 support for JPEG 2000 is restricted in ways that increase compatibility with PDF/X, e.g., constraining the number of colour channels (to 1, 3, or 4)
PDF/A-3b: adds one feature to PDF/A-2. Permitting the embedding within a PDF/A file (or files) in any other format, not just other PDF/A files (as permitted in PDF/A-2). This has important implications for archival
Note: In a PDF/A-3 file, any embedded files should be considered 'non-archival'. In other words, the embedded file is considered as only of short-term or temporary use. Only the primary PDF content with its visible page display should be considered as 'archived' for the long term.
Unsupported Annotations - Choose whether to "Delete" any unsupported annotations or to "Fail" (i.e. do not convert the original PDF to PDF/A).
Transparency - Choose whether to "Remove" any transparency in the document or to "Fail" (i.e. do not convert the original PDF to PDF/A).
Embedded Files - Choose whether to "Delete" any embedded file in the document or to "Fail" (i.e. do not convert the original PDF to PDF/A).
Use this section to set the settings to apply when the conversion of the document to PDF/A fails:
Add annotations to document - Check this box to add annotations when there were specific issues with the document that prevented it from being converted to PDF/A.
Append report to document - Choose this box to add a report at the end of the document with issues that prevented it from being converted to PDF/A.
This section determines what happens once the PDF document has successfully been processed. If the processing fails for any reason the document will instead rout the document using the settings set in the Trouble Handling tab.