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https://issues.apache.org/jira/browse/PDFBOX-3725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15934117#comment-15934117
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Tilman Hausherr commented on PDFBOX-3725:
-----------------------------------------

Yes one version of veraPDF uses a modified version of PDFBox. Another one 
(which I haven't tested) uses their own parser.

However being able to view a file in Adobe doesn't mean it is PDF/A compliant. 
Even the blue bar (which you don't have) doesn't mean it is PDF/A compliant. 
You need a validator. The one I used yesterday (from PDF-Tools) has existed for 
a long time, and we've used it as "gold standard" to improve our own validator 
(PDFBox preflight).

In other words: even if we'd somehow be able to parse your alleged type 1 font, 
this wouldn't make your file PDF/A compliant. You'd may have to convince every 
validator manufacturer that their validator is incorrect.

> Problem with Type1 font parser
> ------------------------------
>
>                 Key: PDFBOX-3725
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-3725
>             Project: PDFBox
>          Issue Type: Bug
>          Components: FontBox
>    Affects Versions: 2.0.5
>         Environment: linux
>            Reporter: Wolfgang Hamann
>            Priority: Minor
>         Attachments: ft70.ps, kcap.pdf
>
>
> the parser uses "readSimpleDict" to parse the Metrics.
> This allows
> /Metrics 100 dict dup begin ....... end def
> but not
> /Metrics 100 dict def Metrics begin ..... end
> This variant seems to work in most other pdf tools, however



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