We have a PDF that is coming from a third-party (rotation on pdf-page is 3):
exampleWithoutStamp.pdf (564.9 KB)
This PDF gets stamped by a (human) user in Acrobat:
exampleWithStamp.pdf (572.6 KB)
Then it is converted with Aspose.PDF (Java) to PDF/A:
exampleWithStampAsPDFA.pdf (637.5 KB)
In the resulting PDF/A document (exampleWithStampAsPDFA.pdf (637.5 KB) ) the Text of the stamp is not readable since it is rotated by 90 degrees.
The code doing the conversion is straight forward:
Document pdfDoc = new Document(inputPdfData);
pdfDoc.convert(new PdfFormatConversionOptions(PdfFormat.PDF_A_3B));
pdfDoc.save(outputPdf);
The problem only occurs if the page which gets stamped has a rotation other than ‘NONE’.
It seems that Aspose.PDF, when doing the conversion to PDF/A, takes into account the rotation on the page and then applies some rotation on the text in the stamp.
Aspose.PDF Version 23.7
I upgraded to Version 23.8 and could no longer reproduce the Bug.