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Originally Posted by rlauzon
Seeing as how creating a tagged PDF results in a significantly larger PDF, I really don't see much value in using tagged PDFs today.
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The main value of it may be more clear when you consider a newspaper in PDF. PDF need not have any structure at all -- it's all about placing snippets of text on a page, but they need not be placed there in any particular order.
Tagging keeps text threads together: the part on the first page that ends 'continue on page 23', and the second page that is broken over two columns. If you want to be able to 'copy thread', there must be some kind of structure tying it all together.
And I have not even touched on accessibility design.