Quote:
Originally Posted by kovidgoyal
If a PDF is tagged (i.e. it is reflowable) that means it's basically two documents. A "rendered" version that has all the typographical niceties of PDF and a tagged version that supports reflow and has a subset of the features of HTML. The tagged or reflowable version will not support the nice features of rendered or untagged PDF. In fact, it will not even support the features of HTML+CSS. So with a tagged PDF what you get is a file that is inferior in terms of "rendered layout" to an untagged PDF and that is inferior to HTML+CSS as a reflowable format. So why bother with tagged PDFs?
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I believe this is an error. The tagged PDF is a superset, not a subset. Tagging can be added after the fact by some tools (ActiveSync) and can even be done on the fly (PalmPDF) without altering the document. Tagging can be turned off dynamically when needed and the original document will be displayed looking
exactly what it looked like when it was not tagged at all. Tagging is the best of both worlds. You can read the data and when it is important to see the layout you can switch to this mode.
Dale