Cherry-pick from PR #143: pdf/a support #250
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+ refactoring: use enum for setting the conformance level + add missing StructTreeRoot for enabling pdf/a-1 compliance add missing StructTreeRoot for enabling pdf/a-1 compliance
danfickle
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danfickle
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…uired. FIXME: Causes a crash if no fonts are available for any text.
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@danfickle thank you. By the way, if you choose the conformance level PDF/A-3, it's not required to embed the fonts, so the condition should be (NONE || PDF_A_3) :) |
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@syjer |
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@danfickle , I derived empirically using the pdf/a validator ( https://www.pdf-online.com/osa/validate.aspx ), but you are right that in the specifications, there is no exception. So most likely I'm wrong :) |
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Hi @danfickle , I've cherry-picked from the PR done by @backslash47 the pdf/a support.
Additionally, from the PR, I've done some changes:
I've validated the various level of compliance using https://www.pdf-online.com/osa/validate.aspx and they seems to pass. Obviously you need to supply a ICC profile (I've used the one from https://svn.apache.org/viewvc/pdfbox/trunk/examples/src/main/resources/org/apache/pdfbox/resources/pdfa/ )
As an interesting note: for level 1/2 validation, you cannot use the fallback fonts: all the fonts must be embedded.