Hi Alex!

First thing you has to do in this case is like you did it:
Decrypt the pdf after loading.
Clean the property-fields with QuickPDF.
Save the file with a new name unencrypt.
Load the new file content into a stream or so:

filecontent := '';
fs := TFileStream.Create(pdffile,fmOpenRead+fmShareDenyWrite);
try
  SetLength(filecontent,fs.Size);
  fs.Read(PChar(filecontent)^,fs.Size);
finally
  fs.Free;
end;

Now you can search in the string for (in your example):

pdf:Producer='Acrobat Web Capture 6.0'
pdf:Keywords='TestKewyWords'
xml:lang='x-default'>TestSubject</rdf:li>
xml:lang='x-default'>file:///D|/test.txt</rdf:li>

You change all things like this:

pdf:Producer=''
pdf:Keywords=''
xml:lang='x-default'></rdf:li>
xml:lang='x-default'></rdf:li>

At least you should write the string back to harddisk with a new name.
Delete the original file.
Rename the new file with the original name.

One bad point: QuickPDF can't load the pdf-document in a proper way now!
The Foxit Reader and the Acrobat Reader doesn't have any problems with the new file.
You can test this all using Notepad - It works! I've sent you an email with original and new file...

Hi Alex!It's like i've told it already ...Like any other pdf-library QuickPDF cleans the correct property-fields.Foxit (for example) only looks in these fields and find nothing.Acrobat first look in these fields and then (if there's nothing) it looksinto an existing rdf-content and if there's something (in your samplethere're the properties twice) this content will be displayed as properties.I think there's a solution (like always)... I'll call you later what you cando. Again: Other pdf-libraries can't help you in this case, too.Cheers, Ingo