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https://issues.apache.org/jira/browse/PDFBOX-1162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13147781#comment-13147781
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William Fausser commented on PDFBOX-1162:
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I'm wondering if there is a tolerance or within a range that the widths can be
and still be acceptable.
I don't have a copy of the spec. I found this on google:
Given that advance widths in the embedded font are never supposed to be used
during PDF rendering it is not clear why PDF/A standard puts this
restriction in the first place. Furthermore PDF/A-1 does not define if the
match is exact or approximate, and if it is approximate, what is the error
tolerance . Unfortunately there are many similar holes in PDF/A standard(s).
> Font error in "preflight" .....when validating the attached PDF/A
>
> -----------------------------------------------------------------------------------
>
> Key: PDFBOX-1162
> URL: https://issues.apache.org/jira/browse/PDFBOX-1162
> Project: PDFBox
> Issue Type: Bug
> Components: Preflight
> Affects Versions: 1.7.0
> Reporter: William Fausser
> Assignee: Eric Leleu
> Fix For: 1.7.0
>
> Attachments: The_Legal_ Case_for_ PDFA.pdf
>
>
> Font Issue problem when validating the attached PDF/A.
> 3.1.6 : Invalid Font definition, Width of the character "367" in the font
> program "ABCDEE+Calibri"is inconsistent with the width in the PDF dictionary.
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