Flatten changes PDF-Format

Aspose.PDF Product Family
1

Hi,

in my use case, I have to load a PDF/a (PDF-a 2b) and flatten the fields. After flattening, the PDF format is changed to v_1_7. Is there a way that the format is not changed or do I have to do a conversion again?

using (var strmIn = new MemoryStream(pdfData))
{
    using (var inputDok = new Document(strmIn))
    {
        if (inputDok.Form.Count > 0)
        {
            inputDok.Flatten();

            using (var strmOut = new MemoryStream())
            {
                inputDok.Save(strmOut);
                return strmOut.ToArray();
            }
        }
    }
}
2

@Verus2020

Could you please share your input PDF and problematic output PDF here for testing? We will investigate the issue and provide you more information on it.

3

Hi,

here is an example:

49690_Sonstiges.pdf (1.9 MB)

4

@Verus2020

We suggest you please read following article to convert final output to PDF/A format.
Convert PDF to PDF/A formats

You can use following code snippet to get the desired output.

using (var strmIn = new MemoryStream(File.ReadAllBytes(MyDir + "49690_Sonstiges.pdf")))
{
    using (var inputDok = new Document(strmIn))
    {
        if (inputDok.Form.Count > 0)
        {
            inputDok.Flatten();

            using (var strmOut = new MemoryStream())
            {
                inputDok.Convert(dataDir + "log.xml", PdfFormat.PDF_A_1B, ConvertErrorAction.Delete); 
                inputDok.Save(MyDir + "output.pdf");
            }
        }
    }
}
5

Ok, so I need to convert the document again.

6

@Verus2020

We have logged this problem in our issue tracking system as PDFJAVA-42342. We will inform you once there is an update available on it.