PDF Standards
Influxion supports various PDF standards to ensure compliance with industry requirements. The following standards are available when generating PDFs:
Standard |
Description |
|---|---|
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PDF/A-1b is part of the PDF/A-1 standard (based on PDF 1.4) ensuring reliable visual reproduction (Level B conformance). It focuses on preserving the visual appearance of documents for long-term archiving. |
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PDF/A-2b belongs to the PDF/A-2 standard (based on PDF 1.7) and also provides Level B conformance. It adds support for JPEG 2000 compression, transparency, layers, and embedding of OpenType fonts. |
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PDF/A-2u ensures Level B conformance plus Unicode mapping of all text, enabling improved text search and extraction. |
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PDF/A-3b extends PDF/A-2b by allowing the embedding of arbitrary file formats (e.g., XML, CSV) while maintaining Level B conformance for visual fidelity. |
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PDF/A-3u is similar to PDF/A-3b but also requires Unicode mapping for all text, enhancing text accessibility and search. |
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PDF/A-4b is part of the newer PDF/A-4 standard (based on PDF 2.0) and maintains visual reproducibility (Level B conformance). It simplifies conformance levels, dropping Level A. |
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PDF/A-4u adds to PDF/A-4b by requiring Unicode text mapping to ensure better text extraction and accessibility. |
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PDF/UA-1 is designed to ensure universal accessibility. It mandates tagged PDFs that support assistive technologies, enabling people with disabilities to read and navigate documents effectively. |
The PDF/A-4 standard is the latest in the PDF/A series, and it simplifies the conformance levels by removing Level A, focusing on visual fidelity and accessibility. PDF/UA-1 is a separate standard that emphasizes accessibility for users with disabilities. The PDF/A-3 standards allow for embedding other file formats, which can be useful for archiving complex documents.
Note
The PDF/UA-1 standard is not fully guaranteed by Influxion at this time. It is recommended to use PDF/A-4u for documents requiring accessibility features. Some features of PDF/UA-1 may be available, but full compliance cannot be guaranteed, since it puts some requirements on the PDF structure and therefore also on the templates provided by the user. See PDF/UA-1 requirements and WeasyPrint docs for more details.