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

[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

[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]

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]

Can you share your file? I would love to test that competition capability of such a fix.

[yosimo]

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]

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]

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.

[loicaigon]

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