Hi > Hi, > I am using PDFBox to create legally valid PDF/A-2b documents, on a Linux Mint > machine. > For this, I have .odt files with embedded fonts created by LibreOffice > Writer, that I export as PDFs. Then, I manipulate the metadata of the > documents by aligning the XMP metadata with the descriptive ones (author, > title, subject, etc.), providing a color profile, and setting the > identification schema to part 2 and conformance B, just like pointed out in > your guides. > I manually tested the output PDF/A-2b documents using this online validator: > https://www.pdf-online.com/osa/validate.aspx, and I noticed that if the > aforementioned documents contain certain fonts, e.g. MathJax-Typewriter, the > validation fails with a series of errors like this: > The width for character X in font ‘FAAAAA+MathJax_Typewriter-Regular’ does > not match. > I would like to know if this is caused by some limitations in the library, or > if I am doing something wro > ng in conforming the PDF. > The failing PDF and the output of the validator are provided as attachments > to this mail.
The issue is (very likely) happening when exporting the PDF. PDF/A requires that the character width information in the PDF matches the information in the font program. This is not done correctly by the PDF exporting process. You might be able to correct that by going through the embedded font information, parse the width for the characters and match that with the width in the PDF. The approach you are doing is using PDFBox to ensure that requiremenst such as metadata is conforming, but if the PDF content itself doesn't conform to PDF/A-2b by the PDF export than such issues may arise (there might be others such as color management ...) BR Maruan > Best regards, > Luca > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
