Re: Possible (side) effects of using dPDFACompatibilityPolicy=1

At 08:35 27/01/2016 +0000, Simon Stratmann wrote:


>GPL Ghostscript 9.18: Annotation set to non-printing,
>  not permitted in PDF/A, annotation will not be present in output file
>GPL Ghostscript 9.18: PDFA doesn't allow images with Interpolate true.
>
>The link text is kept but the links don't work. The images seem to be 
>still there, so I don't know what Ghostscript could've left out?

I presume, but cannot say for certain without investigating the file, that 
it left out the link annotation (the *text* is not the same thing as the 
link) and it emitted the image without the /Interpolate flag being set.


>For comparison I converted the same PDF with 3-Heights PDF/A converter and 
>it would keep the links intact - so the links itself aren't the problem 
>and could be left in.

Not if they are set to non-printing. We could instead change them to 
'printing' but that isn't what Policy=1 does, it drops anything which is 
invalid.


>The point is, with PDFs which usually only contain text and images, could 
>I lose actual content or just metadata and stuff like links (if they were 
>in the PDF).

And I'm not going to guarantee you anything. Check the spec, anything which 
is  not permitted in a given level of PDF/A will be dropped from the output 
if you set the Policy to 1 (exception; we render transparency to an image 
for PDF/A-1).

Its up to you to decide whether that is acceptable to you.



                     Ken