How to make TrueType fonts compatible with the PDF/X-4 standard?

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yosimo
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Joined: Tue Mar 27, 2018 6:25 pm

How to make TrueType fonts compatible with the PDF/X-4 standard?

Post by yosimo »

Hi,
my preflight reports that the PDF contains TrueType fonts that do not comply with the PDF/X-4 standard.
What action can I take to make these TrueType fonts compatible with the PDF/X-4 standard?
Can TrueType fonts be converted to CFF?

Thanks
yosimo
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TTF not PDF-X-4-compliant.png
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bens
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Re: How to make TrueType fonts compatible with the PDF/X-4 standard?

Post by bens »

I don't think there's a way to do that with PitStop. It would require quite detailed font editing, which is more the domain of font editing programs. I think your best bet is to unembed if necessary, then re-embed a correct version of the font.
yosimo
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Joined: Tue Mar 27, 2018 6:25 pm

Re: How to make TrueType fonts compatible with the PDF/X-4 standard?

Post by yosimo »

The files are supplied by our customers. I have no possibility of exchanging fonts. We don't even have some of these fonts. The cause is probably an error when creating the PDFs.
I thought that if PitStop can recognize the error, then perhaps PitStop could also correct it. Preflight tools from other manufacturers can do this.
loicaigon
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Re: How to make TrueType fonts compatible with the PDF/X-4 standard?

Post by loicaigon »

Can you share your file? I would love to test that competition capability of such a fix.
yosimo
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Re: How to make TrueType fonts compatible with the PDF/X-4 standard?

Post by yosimo »

loicaigon wrote: Tue Jan 28, 2025 1:20 pm Can you share your file? I would love to test that competition capability of such a fix.
Yes, of course. I have uploaded two files here:

https://magentacloud.de/s/f5czbLPAj3JtgPs

Thank you very much.
loicaigon
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Re: How to make TrueType fonts compatible with the PDF/X-4 standard?

Post by loicaigon »

Thanks,

But I just run a PDF/X-4 (including fixes) in a competition software and this peculiar issue is not fixed neither. What is the software you are referring to?
yosimo
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Joined: Tue Mar 27, 2018 6:25 pm

Re: How to make TrueType fonts compatible with the PDF/X-4 standard?

Post by yosimo »

Hi Loïc,

the PDFToolbox from Callas offers a fixup “Remove additional encoding entries in cmap of symbolic TrueType fonts”. This corrects the PDF.
There is also a test that can be carried out in advance.
Attachments
2025-01-29 08_25_00-callas pdfToolbox_ Edit Check.png
2025-01-29 08_25_00-callas pdfToolbox_ Edit Check.png (32.74 KiB) Viewed 8547 times
callas pdfToolbox_ Edit Fixup.png
callas pdfToolbox_ Edit Fixup.png (35.28 KiB) Viewed 8548 times
loicaigon
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Re: How to make TrueType fonts compatible with the PDF/X-4 standard?

Post by loicaigon »

Thanks for pointing this out. Indeed you are right and we will look at how we can improve PitStop behaviour in that field.
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