The PDF/A-1 standard uses the PDF Reference 1.4 and specifies two levels of compliance:
- PDF/A-1b - Its goal is to ensure reliable reproduction of the visual appearance of the document.
- PDF/A-1a - Its objective is to ensure that documents content can be searched and re-purposed. This compliance level has some additional requirements:
Since the PdfProcessing and its PdfFormatProvider is compliant with the PDF Reference 1.7. , the produced documents are created with this version as well:
Purpose: Long-term archiving of electronic documents with full semantic structure.
Level "1a" ensures:
Tagged PDF (with proper logical structure and reading order)
Unicode text for proper text extraction and searchability
Embedded fonts (for consistent rendering)
Restrictions:
No audio/video
No encryption
No JavaScript
No external content (everything must be self-contained)
Based on: PDF 1.4 (Acrobat 5)
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