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2. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
This information is not needed to display the file - it's a secondary list of CIDs. In fact it's not clear what use it is at all. But I assume you are preflighting against a PDF/X or PDF/A standard, and these rules are fixed.
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3. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
Indeed I am also trying to generate PDF/A-1b compliant document and adobe preflight tools shows exactly the same error. Since it occurs in the "normal" pdf file I was really curious what are the consequences of this error.
I am struggeling with this error for a long time and I do not know how to fix it. (I know it can be solved by applying "fixs" in adobe acrobat but it is not a solution since I wanna generate proper PDF/A-1b document from my app).
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4. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
You should probably be on the Apache FOP forums for this but here is what I found there:
FOP - Users - Upgrading fop 0.95 to fop 1.1 because of PDF/A-1b
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5. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
Actually it is my post on Apache forum. I´ve already made a workaround with full embedding fonts to pdf but the file is much much much bigger because characters which are not used are embedded too.
I came here to actually learn more about the error and what are the consequences if is is not fixed.
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6. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
The consequences are that it will fail PDF/A validation. That is all.
To solve this does not need the entire font embedded, just the CIDSet. Here is the technical definition of CIDSet. "
A stream identifying which CIDs are present in the CIDFont file. If this
entry is present, the CIDFont contains only a subset of the glyphs in the character
collection defined by the CIDSystemInfo dictionary. If it is absent, the only indication
of a CIDFont subset is the subset tag in the FontName entry (see Section 5.5.3,
“Font Subsets”)."
So, you can avoid the problem by including a full font, but any fix which adds the CIDSet list (which can always be done by analysing the font in the PDF) will be ok too.
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7. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
I assume that I have to modify the font files and add the CIDSet. Is there a way how acrobat can help with it. I mean when I hit "convert to PDF/A-1b" on my file with the error. It shows that the missing CIDSet was added.
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8. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
No, not at all. The CIDSet is not a part of a font file. It exists only in a PDF, alongside the font file, giving information about it.
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9. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
I guess you are using the pre-flight script for converting. I was going to suggest that. If it works, then you have a workflow to use. Otherwise it is dependent on how the PDF is created.
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10. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
So it is (how Bill@VT said) problem of generating the result pdf document. Does a font have to meet some requirements? Because I can see the characters in a font viewer but after embedding I see the error.
Also I would like to ask for correction and if I get righ how the correct character is found.
We work with TTF fonts.
1. For embedded fonts
- pdf file contains table with glyf ID and glyf representation
- pdf file contains cmap which maps Character code (unicode) and glyfID
- during rendering a file finding correct glyf is clear since we have character code
2. CID fonts
- pdf file contains table with glyf ID and glyf representation
- pdf file contains CID table wich maps CID and glyfID ( CIDToGIDMap)
- pdf file contains table which maps character code (Identity-H, Unicode) to CID
- during rendering we have character code and we get CID
- based on CID is looked up character metrics
- based on CID is found glyf representation
Is here something what I am missing or I forgot to point out?
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11. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
None of what you have said is in any way connected to the CIDSet, which is not used in font rendering.
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12. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
So since it is not needed for rendering and it just giving information about font. What is it for ? For what actions is this CIDset used?
My previous post is not related to the CIDSet but are my assumptions how finding characters works right?
Really thank you for responses.
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13. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
Please reread the thread. I told you in reply#2 that this information is not needed for rendering. And as I have said, it is of no important AT ALL why the information is there. Perhaps a committee made a mistake. But the rules of PDF/A are FIXED even if they serve no useful purpose. That is all we have to know.
If you want to ask detailed questions about PDF internals, try this forum: PDF Language and Specifications
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14. Re: Adobe Acrobat XI - Preflight tool - error List of CIDs missing in CIDSet of embedded CID font
Thank you very much for the response.
I will ask there for more detailed explanation.
