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Convert PDF to PDF/A results in very big file

Hallo,
Converting “normal” PDF to PDF/A results in filesize about factor 6. This is critical for our application. I saw the same topic before, but I like to know the status.
Regards, Gerd

@GRein

Can you please share sample file and links of the related topic that you found? We will further proceed to assist you accordingly.

Here are the sample files:
Rechnung.pdf (211.9 KB)
Rechnung.pdfa.pdf (1.6 MB)

Here is also one of the issues I found:
Big PDFA

Regards Gerd

@GRein

Can you please check the attached PDF document that was generated using below code snippet and 21.10 version of the API?

Document doc = new Document(dataDir + "Rechnung.pdf");
PdfFormatConversionOptions opts = new PdfFormatConversionOptions(dataDir + "logFile1.Txt", PdfFormat.PDF_A_1B, ConvertErrorAction.Delete);

opts.setOptimizeFileSize(false);
opts.setTransparencyAction(ConvertTransparencyAction.Default);
opts.setConvertSoftMaskAction(ConvertSoftMaskAction.ConvertToStencilMask);
doc.convert(opts);
doc.optimize();
opts.setOptimizeFileSize(true);
doc.convert(opts);
doc.save(dataDir + "optimizefilesize.pdf");

optimizefilesize.pdf (240.6 KB)

Please check the attached document and let us know in case you notice some issue in it.

Thank you for the solution. I tested it with some files and it works.
Files were 1 page, 20 pages, 500 pages. This worked.
My last test is running: a pdf with 26000 pages. Need time, but I hope also, this will succeed.
regards, Gerd

@GRein

Sure, please take your time to test the scenario and feel free to share sample file with us in case you face any issues.