Q: Has the default PDF version become 1.5 in recent pdftron/netsdk
versions? Particularly what we do is the following:
public static byte[] RepairPdf(Stream pdfStream) {
Base.InitializePdfNet(false);
byte[] buffer;
try {
pdfStream.Position = 0;
using (var binaryReader = new BinaryReader(pdfStream)) {
var fileBuff =
binaryReader.ReadBytes((int)binaryReader.BaseStream.Length);
using (var pdfDoc = new PDFDoc(fileBuff, fileBuff.Length)) {
pdfDoc.InitSecurityHandler();
buffer = new byte[1];
var bufferSize = 1;
pdfDoc.Save(ref buffer, ref bufferSize,
SDFDoc.SaveOptions.e_remove_unused);
pdfDoc.Close();
}
}
}
return buffer;
}
... and it seems like when providing a 1.4 one as input, they get
returned as 1.5/Acrobat6 now? Has anything changed in one of the
recent versions/5.5?
---------------------------
A: Yes, starting with v.5.5. PDFNet is by default saving 'Compressed
PDF' (compressed objects + compressed xref) which results in smaller
files (e.g. 9 mb vs 18 mb for ISO 32000 pdf !).
If you would like to make PDFs compatible with older viewers (e.g.
Acrobat 5) you can use e_compatible flag in the call to pdfdoc.Save().
For example:
pdffoc.Save("my.pdf", SDFDoc.SaveOptions.e_remove_unused |
SDFDoc.SaveOptions. e_compatible);