TCPDF
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Fix/xmp description subject
PR for issue #817
joe:~/TCPDF$ php examples/example_001.php > example001.pdf
joe:~/TCPDF$ exiftool -XMP:All example001.pdf
XMP Toolkit : Adobe XMP Core 4.2.1-c043 52.372728, 2009/01/18-15:08:04
Format : application/pdf
Title : TCPDF Example 001
Creator : Nicola Asuni
Description : TCPDF Tutorial
Subject : TCPDF, PDF, example, test, guide
Create Date : 2025:10:01 18:35:53+00:00
Creator Tool : TCPDF
Modify Date : 2025:10:01 18:35:53+00:00
Metadata Date : 2025:10:01 18:35:53+00:00
Producer : TCPDF 6.10.0 (http://www.tcpdf.org)
Document ID : uuid:0cba4c67-099e-fe74-fea7-a279fb39678d
Instance ID : uuid:0cba4c67-099e-fe74-fea7-a279fb39678d
Schemas Namespace URI : http://ns.adobe.com/pdf/1.3/
Schemas Prefix : pdf
Schemas Schema : Adobe PDF Schema
Schemas Property Category : internal
Schemas Property Description : Adobe PDF Schema
Schemas Property Name : InstanceID
Schemas Property Value Type : URI
The code that generates that is
$pdf->setCreator(PDF_CREATOR);
$pdf->setAuthor('Nicola Asuni');
$pdf->setTitle('TCPDF Example 001');
$pdf->setSubject('TCPDF Tutorial');
$pdf->setKeywords('TCPDF, PDF, example, test, guide');
We can see here that
- Description contains the Subject
- Subject contains the keywords
With this PR the code to create the PDF is now
$pdf->setCreator(PDF_CREATOR);
$pdf->setAuthor('Nicola Asuni');
$pdf->setTitle('TCPDF Example 001');
$pdf->setSubject('TCPDF Tutorial');
$pdf->setDescription('TCPDF Tutorial Description');
$pdf->setKeywords('TCPDF, PDF, example, test, guide');
and the output is
joe:~/TCPDF$ php examples/example_001.php > example001.pdf
joe:~/TCPDF$ exiftool -XMP:All example001.pdf
XMP Toolkit : Adobe XMP Core 4.2.1-c043 52.372728, 2009/01/18-15:08:04
Format : application/pdf
Title : TCPDF Example 001
Creator : Nicola Asuni
Description : TCPDF Tutorial Description
Subject : TCPDF Tutorial
Create Date : 2025:10:01 18:54:34+00:00
Creator Tool : TCPDF
Modify Date : 2025:10:01 18:54:34+00:00
Metadata Date : 2025:10:01 18:54:34+00:00
Producer : TCPDF 6.10.0 (http://www.tcpdf.org)
Document ID : uuid:91da612c-5ad4-9b90-89fb-aa6525362f2f
Instance ID : uuid:91da612c-5ad4-9b90-89fb-aa6525362f2f
Schemas Namespace URI : http://ns.adobe.com/pdf/1.3/
Schemas Prefix : pdf
Schemas Schema : Adobe PDF Schema
Schemas Property Category : internal
Schemas Property Description : Adobe PDF Schema
Schemas Property Name : InstanceID
Schemas Property Value Type : URI
where you can see that we have description and subject as per the methods.
