Hi,
I'm currently converting a bunch of PDF thesis into PDF/A 1-b through an Action (batch processing). Some of them resist conversion : Acrobat displays an error message : "Preflight.dll is missing or corrupt".
If I do it manually (open the PDF document and then "Save as"-> "PDF/A") :
- for 3 of them I always get the above-mentioned error message
- for 3 others I manage to create a PDF/A 1-b version, but when I open it in Acrobat and browse through the document I get a popup telling me "Impossible to extract embedded font xxxxxxxxxxx. Some characters might be displayed or printed incorrectly" [homemade translation from french to english ;-)].
3 fonts seem to cause this problem :
RRTVUI+Calibri,Italic
ALONFR+Calibri
SAPTZM+Calibri
N.B. : I'm using a PC with Windows XP and Acrobat XI Pro v. 11.0.3
As I understand it, PDF/A 1-b norm requires all fonts to be included into the PDF file. But what happens when the author of the document used a font that I don't have on my computer ? Does it mean that in thoses cases I won't be able to create a PDF/A 1-b version for archiving purposes ?
This is all the more troubling that in one of the PDF/a 1-b with font problems, I realized that the original text has been altered (some "%" characters are not displayed at all).
At first I intended to archive only the PDF/A 1-b version of the thesis files, but now I realize that this is much more complicated than I thought : some PDF refuse to be converted (for a yet unknown reason), and some are altered in the process !
Can you please help me to find out :
- why some PDFs can't be converted to PDF/A 1-b ("Preflight.dll is missing or corrupt")
- a way to remedy the font problem ?
Thanks !