Hi Again
I found and experienced that the conversion of an existing PDF to a PDF A
complaint ones is merely impossible (or very hard and long process to do so)
and still I found that the problem is with the PDF Schema values when the newly
added metadata values are not matching with them.
I further found that it is quite possible to read a PDF and edit the PDF Schema
meta data. So I tried reading the existing PDF to an existing PdfCopy, add
metadata to it, and then forward it to the convertPdfA() method which is stated
in my below mail.
But still it doesn't work. (Assume that the file1 is the existing PDF and the
file2 is the PDFA complaint file which is the output)
PdfReader reader = new PdfReader(new
RandomAccessFileOrArray(file1.getPath()), null);
PdfStamper stamper = new PdfStamper(reader, new
FileOutputStream(newFile));
HashMap info = reader.getInfo();
info.put("Subject", "Report Executor");
info.put("Author", "Report building logic");
info.put("Keywords", "PDF/A compliant");
info.put("Title", "Report");
info.put("Creator", "Application reporting");
stamper.setMoreInfo(info);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
XmpWriter xmp = new XmpWriter(baos, info);
xmp.close();
stamper.setXmpMetadata(baos.toByteArray());
stamper.close();
(I call this method before calling the convertToPdfA method, and then it will
return file1 with modified PDF document information)
In my already existing PDF (which is to be converted to PDFA), only the
following metadata are there.
(When executed - reader.getInfo() )
[0] "Type => Info"
[1] "Producer => null"
My PDF which was converted to PDFA from my convertToPdfA method compliance to
PDFA/1b correctly when I removed the title, keywords and subject fields from
the PDF information.
(Removed code)
//document.addTitle(reader.getInfo().get("Title").toString());
//document.addKeywords(reader.getInfo().get("Keywords").toString());
//document.addSubject(reader.getInfo().get("Subject").toString());
So it confirms that the above three properties are not existing in PDF
dictionary values, and if anyhow we can add those values to the already created
PDF and then pass it to conversion, it should work.
How can I change my approach? As this is not working for me, do you have any
more suggestions?
Is that enough to update only the PDF Schema like this and then use my
convertToPdfA method given below?
Thank you in advance.
-Manulak Dissanayake
From: Manulak Dissanayake [mailto:[email protected]]
Sent: Thursday, August 23, 2012 4:38 PM
To: [email protected]
Subject: Problem with the PDFA1B compliance
Hi All
I am creating a PDF which is supposed to be complaint with PDF/A1-b and when I
use online validators like PDF TOOLS Online
Validator<http://www.pdf-tools.com/pdf/validate-pdfa-online.aspx>, it gives the
following error saying that the PDF is not PDF/A complaint.
dc:description/*[0] :: Missing language qualifier.
dc:title/*[0] :: Missing language qualifier.
The property 'pdf:keywords' is not defined in schema 'Adobe PDF Schema'.
The XMP property 'dc:title' is not synchronized with the document information
entry 'Title'.
The XMP property 'dc:description' is not synchronized with the document
information entry 'Subject'.
The required XMP property 'pdf:Keywords' for the document information entry
'Keywords' is missing.
I am using FOP for rendering my PDF and using iText (iText 2.1.6 by 1T3XT) for
converting the PDF to be PDF/A complaint.
public void convertToPdfA(File file1, File file2)
{
PdfReader reader = null;
Document document = null;
PdfCopy copy;
InputStream PROFILE =
this.getClass().getClassLoader().getResourceAsStream("com/ini/vldt/config/sRGB
Color Space Profile.icm");
There I first read the PDF file to a PdfReader object, then get a copy as
follows.
reader = new PdfReader(new RandomAccessFileOrArray(file1.getPath()),null);
//Creating a new document that has the existing page size
document = new Document(reader.getPageSizeWithRotation(1));
//save the data in the 'document' to file2
copy = new PdfCopy(document, new FileOutputStream(file2));
Then I try adding the Title, Author, Keywords, Creator, Subject, Creation Date
and Producer as follows.
try{
document.addTitle(reader.getInfo().get("Title").toString());
}
catch(Exception e){
document.addTitle("TEST Title");
}
try{
document.addAuthor(reader.getInfo().get("Author").toString());
}
catch(Exception e){
document.addAuthor("TEST Author");
}
try{
document.addKeywords(reader.getInfo().get("Keywords").toString());
}
catch(Exception e){
document.addKeywords("TEST Keywords");
}
document.addCreator("TEST Creator");
document.addCreationDate();
document.addProducer();
try{
document.addSubject(reader.getInfo().get("Subject").toString());
}
catch(Exception e){
document.addSubject("TEST Subject");
}
Then I give the PDFA conformance values and then create the PDF as follows.
copy.setPDFXConformance(PdfCopy.PDFA1B);
copy.setPdfVersion(PdfCopy.VERSION_1_4);
document.open();
ICC_Profile icc = ICC_Profile.getInstance(PROFILE);
copy.setOutputIntents("Custom", "", "http://www.color.org";, "sRGB
IEC61966-2.1", icc);
for(int i=1;i<=reader.getNumberOfPages();i++){
document.setPageSize(reader.getPageSizeWithRotation(i));
copy.addPage(copy.getImportedPage(reader, i));
}
copy.createXmpMetadata();
copy.close();
document.close();
reader.close();
I got another error report from
SolidFrameowrk<http://www.validatepdfa.com/online.htm> validations as follows.
- <metadata>
<problem severity="error" objectID="27" clause="6.7" standard="pdfa">Language
qualifier missing for property 'dc:description'</problem>
<problem severity="error" objectID="27" clause="6.7" standard="pdfa">Language
qualifier missing for property 'dc:title'</problem>
<problem severity="error" objectID="27" clause="TN0003"
standard="pdfa">Property 'pdf:keywords' shall use a custom embedded
schema</problem>
<problem severity="error" objectID="27" clause="6.7.3"
standard="pdfa">Document information entry 'Keywords' not synchronized with
metadata property 'pdf:Keywords'</problem>
</metadata>
- <fonts>
<problem severity="error" objectID="12" clause="6.3.5"
standard="pdfa">Missing or incorrect CIDSet for CIDFont subset</problem>
<problem severity="error" objectID="18" clause="6.3.5"
standard="pdfa">Missing or incorrect CIDSet for CIDFont subset</problem>
</fonts>
What can be the issue? Any reply is highly appreciated.
Thank you.
-Manulak Dissanayake
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