As asked at https://tex.stackexchange.com/questions/550778/how-can-i-check-the-tagging-and-accessiblity-of-a-pdf-file?noredirect=1#comment1391644_550778 I am using the following code:
\documentclass{scrreprt}
\title{My title}
\author{My author}
\usepackage{hyperref}
\usepackage{accessibility}
\begin{document}
\maketitle
\tableofcontents
\chapter{This shall be a h1 heading}
\section{This shall be a h2 heading}
This shall be a p section
\section{This shall be a h3 heading}
\end{document}
And other than expected, Adobe Acrobat does not show that the PDF is tagged and there are also no tags in stream visible:

This is true on two different machines, they run with:
- MiKTeX-pdfTeX 2.9.6362 (1.40.18) (MiKTeX 2.9.6400 64-bit)
- MiKTeX-pdfTeX 2.9.7029 (1.40.20) (MiKTeX 2.9.7000 64-bit)
As asked at https://tex.stackexchange.com/questions/550778/how-can-i-check-the-tagging-and-accessiblity-of-a-pdf-file?noredirect=1#comment1391644_550778 I am using the following code:
And other than expected, Adobe Acrobat does not show that the PDF is tagged and there are also no tags in stream visible:

This is true on two different machines, they run with: