PDF to PDF/A problem with font Akagi

Aspose.PDF Product Family
1

Hello!

I try to convert PDF document to PDF/A which normally works fine.
But if the document uses the font Akagi (Akagi Pro Book, Akagi Pro Bold), embedding of the font during the pdf/a conversion seems to make problems:

  • The document is not pdf/a conform afterwards
  • Log: Font “AkagiPro-Book” contains table “LINO” which can’t be used in this PDF format
  • Acrobat Reader shows a problem when the document is opened

Is there any possibility to to convert pdf documents which use this font to pdf/a?
Attached is the converted pdf: akagi.pdf (113.3 KB)

Kind regards!

2

@dvtdaten
In which ABA variant are you converting the document?

3

What do you mean by “ABA variant”?

Here is the code of the conversion, which produces the pdf of my first post, which is not pdf/a conform:

Document document = new Document(new ByteArrayInputStream(content));
PdfFormatConversionOptions options = new PdfFormatConversionOptions(PdfFormat.PDF_A_1B, ConvertErrorAction.Delete);
options.setTransparencyAction(ConvertTransparencyAction.Default);
options.setConvertSoftMaskAction(ConvertSoftMaskAction.ConvertToStencilMask);
document.setDisplayDocTitle(true);
document.convert(options);

I then tried to convert it to PDF_A_2A, which reaches pdf/a conformity, but the embedded Akagi font is not used in the pdf:
akagi.pdf.pdf (4.1 MB)

I also tried some optimizing

options.setOptimizeFileSize(true);
OptimizationOptions o = new OptimizationOptions();
o.setSubsetFonts(true);
o.setRemoveUnusedStreams(true);
o.setRemoveUnusedObjects(true);
document .optimizeResources(o);

With this settings, the resulting pdf is pdf/a conform and uses the Akagi font, but the text in the document looks strange (in the bottom half of the pdf):
akagi.pdf.pdf (98.8 KB)

Kind regards!

4

@dvtdaten
I apologize for the typo - I wanted to know which version of the PDF/A is being converted to.
I reproduced the problem related to the fact that the file does not pass verification after conversion to PDF_A_1B and will create a task for the development team.

5

@dvtdaten
We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): PDFNET-55740

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.

6

@dvtdaten
I check issue for packet version 23.12 with following code:

var document = new Document(dataDir + "akagi.pdf");
var options = new PdfFormatConversionOptions(PdfFormat.PDF_A_1B, ConvertErrorAction.Delete)
{
    TransparencyAction = ConvertTransparencyAction.Default,
    ConvertSoftMaskAction = ConvertSoftMaskAction.ConvertToStencilMask
};

FontRepository.Sources.Add(new FolderFontSource(dataDir + "Fonts")); // If font installed in system this line don't need.

document.DisplayDocTitle = true;
document.Convert(options);
document.Save(dataDir + "akagi-out.pdf");

In the dataDir + “Fonts” directory I placed the font files (AkagiPro-Bd.otf and AkagiPro-Bk.otf taken from the relaited issue PDFNET-55870, file akagi.zip).
If the system has a font installed, then this line is not needed.
The resulting document is validated by Adobe Preflight.
image.png (63.8 KB)