Standards Development
This document specifies how to use the Portable Document Format (PDF) ISO 32000-2:2020 to construct accessible digital documents using PDF technology, and specifies requirements for consuming applications and assistive technology in conformity with this document.
This International Standard does not specify:
- Processes for converting paper or electronic documents to the PDF/UA format
- Technical design, user interface, implementation, or operational details of presentation
- Physical methods of storing these documents such as media and storage conditions
- Required computer hardware and/or operating systems
- Provisions specific to content (beyond programmatic access and textual representation)
- Provisions applying to specific classes (e.g. invoices, reports, etc.) of documents
The accessibility of a document is dependent on the inclusion of a variety of semantic information such as (but not limited to) machine-recoverable text presented in a declared language with full semantics and logical structure. Required information includes a variety of semantic and descriptive metadata, such as alternative text for images. The primary purpose of ISO 14289, commonly known as PDF/UA, is to define requirements for accessible digital documents using the PDF format.
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