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Re: Accessible PDF generator-library for web

for

From: Philip Kiff
Date: Dec 13, 2018 9:16AM

On 2018-12-13 9:30 AM, Patrick H. Lauke wrote:
> As per the links I had in my email - switching to the ConTeXt writer
> engine (rather than pdflatex) apparently allows generation of PDF/A

Just to be clear, there is a difference between PDF/A and PDF/UA.
PDF/A is an old, archive PDF format designed to be self-contained, and
that can be generated within the spec without any tagging.
PDF/UA is a newer, PDF "Universal Access" format, which requires correct
tagging as well as a number of other accessibility considerations.

I don't know about ConTeXt, but I see references to PDF/A not PDF/UA, so
it may be that it generates PDF/A without any tagging capabilities?

In the past, I have had challenges finding an open source PDF conversion
engine that is capable of producing a PDF/UA-compliant file, or even a
relatively well-formed, properly tagged PDF.

Phil.