A set of rules for describing the arrangement of structure elements on the page. A basic layout model (14.8.3, “Basic Layout Model”).Actual content shall be distinguished from artifacts of layout and pagination.Ĭontent shall be given in an order related to its appearance on the page, as determined by the conforming writer. Word breaks shall be represented explicitly.
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Tagged PDF defines a set of rules for representing text in the page content so that characters, words, and text order can be determined reliably.Īll text shall be represented in a form that can be converted to Unicode. Page content (14.8.2, “Tagged PDF and Page Content”).Making content accessible to users with visual impairments (see 14.9, “Accessibility Support”)Ī tagged PDF document shall conform to the following rules:.Conversion to other common file formats (such as HTML, XML, and RTF) with document structure and basic styling information preserved.Processing text for such purposes as searching, indexing, and spell-checking.
Automatic reflow of text and associated graphics to fit a page of a different size than was assumed for the original layout.Simple extraction of text and graphics for pasting into other applications.
It is intended for use by tools that perform the following types of operations: A conforming writer is not required to produce tagged PDF documents however, if it does, it shall conform to these rules. It defines a set of standard structure types and attributes that allow page content (text, graphics, and images) to be extracted and reused for other purposes.Ī tagged PDF document is one that conforms to the rules described in this sub-clause. Tagged PDF (PDF 1.4) is a stylized use of PDF that builds on the logical structure framework described in 14.7, “Logical Structure.” From ISO 32000-1 (the ISO Standard for PDF).
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