What exactly is your assignment? Convert some files so that they are
PDF/A-1b? Because you wrote "I'm trying to convert" but not to what.
Is it just that one file, or many?
Making files PDF/A compatible isn't just fixing some fonts... there may
be many issues. Callas and PDF-Tools have software for that.
Re the two issues you mention, this would require to create the two
items (CIDToGIDMap and CIDSet) from the existing font subset. Would be
some hours of work, but possible... maybe look at the file with
PDFDebugger whether the font shows something useful re GIDs. See also
PDCIDFontType2Embedder for how it is calculated...
What you did likely didn't work because it was subsets.
Tilman
Am 19.09.2017 um 07:21 schrieb Jan Petzold:
Hi, I'm new to pdfbox. I'm trying to convert an existing PDF which
uses an embedded OpenSans font
(https://fonts.google.com/specimen/Open+Sans) and receive these errors
from preflight:
3.1.9: Invalid Font definition, FZUADF+OpenSans: mandatory CIDToGIDMap missing
3.1.11: Invalid Font definition, FZUADF+OpenSans: The CIDSet entry is
missing for the Composite Subset
Everything else seems to be fine, but for these I don't really have a
starting point. I can modify the source font (TTF file) if I have to,
the question would be how to do that and what exactly.
I also tried to just replace the embedded font with a new one
(basically iterate through PDF pages, get the resources, replace fonts
with my new ones) which "fixes" the error but results in a garbage
document not displaying valid text.
Any advice would be very welcome :)
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