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To convert a PDF document to PDF/A format.
$pdf_a = new PDFACompliance(true, $filename, "0", PDFACompliance::e_Level2B, 0, 10); $pdf_a->SaveAs($output_filename, false);
Convert PDF to PDF/A
Full sample code which illustrates how to validate existing PDF documents for PDF/A compliance as well as to convert generic PDF documents to PDF/A format.
PDFACompliance class is used to validate PDF documents for PDF/A (ISO 19005:1/2/3) compliance or to convert existing PDF files to PDF/A compliant documents.
The conversion option analyzes the content of existing PDF files and performs a sequence of modifications in order to produce a PDF/A compliant document. Features that are not suitable for long-term archiving (such as encryption, obsolete compression schemes, missing fonts, or device-dependent color) are replaced with their PDF/A compliant equivalents. Because the conversion process applies only necessary changes to the source file, the information loss is minimal. Also, because the converter provides a detailed report for each change, it is simple to inspect changes and to determine whether the conversion loss is acceptable.
The validation option can be used to quickly determine whether a PDF file fully complies with the PDF/A specification according to the international standard ISO 19005:1/2/3. For files that are not compliant, the validation option can be used to produce a detailed report of compliance violations as well as a list of relevant error objects.
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