Can someone please explain what a "Tagged PDF" is, and how it differs from regular, non-tagged PDF?
Will tagged PDFs contain special content, such as XML, Rich Media, Javascript, or the like?
Which TeX-toolchains generate Tagged PDFs?
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http://help.adobe.com/en_US/Acrobat/9.0/Professional/WS58a04a822e3e50102bd615109794195ff-7cd8.w.html – planetjones Jun 18 '11 at 18:28
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Try here: https://taggedpdf.com/what-is-a-tagged-pdf/ – einpoklum Aug 08 '20 at 20:37
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Tagged PDF is a PDF file that contains meta-information around certain groups of PDF instructions inside a page content. This meta-information has many use cases: Text-extraction, content-reflow, document accessibility, geographic information in PDF containing maps, etc.
If you need to know more details about this topic I would recommend reading Chapter 10 - Document Interchange of Adobe PDF Reference version 1.7.
yms
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Thank you for the answer. Could you please tell me how Tagged Pdf and PdfA/1A correlate ? Is a document "tagged pdf" if it has PdfA/1A format ? – user393679 Jun 22 '11 at 04:20
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Yes, for a document to be PdfA/1A, it must be a Tagged PDF among other requirements. – yms Jun 22 '11 at 11:08
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Can tagged pdf have information about table cells , start & end of them?? – Waseem Ahmad Naeem Aug 20 '17 at 13:14
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The main reason it is used is for accessibility. With the correct tags, a screen reader (for a blind person) can understand where headings fall, what is a table/footnote/graphic and so on. Also there is a feature called PDF Article Threading which is useful for magazine or newspaper layouts where an article is split across boxes/pages.
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