PdfToPdfA1b

PdfToPdfA1b is a .net standard assembly capable to add PdfA-1b meta data to an existing Pdf.

public void AddsPdfAMetadata()
{
    var validPdfA1b = PdfToPdfA1b.Convert("./normalPdf.pdf");
    File.WriteAllBytes("./superValidPdfA-1b.pdf", validPdfA1b);
}

Dependencies

Embedding fonts currently bases on ghostscript. If you run on linux you need to install ghostscript using

sudo apt install ghostscript