I use pandoc to convert Pandoc-flavored Markdown documents to HTML (primarily), Word docx, PDF (via LaTeX), etc. I am currently using pandoc 2.7.3. Microsoft Word for Mac 16.16.14, and MacTeX 2019 on MacOS 10.14.6 (Mojave).
According to the tests I have run using the WebAIM WAVE tool, the accessibility of the generated HTML is reasonable. (I need to give some attention to places in the Markdown input where I use tables and alt text.)
For the generated docx, I am using Word for Mac's builtin accessibility checker. I found that the generated docx is in compatibility mode. Word for Mac's accessibility checker cannot process that kind of file. If I load the file into Word and then save as a normal docx, the checker will run.
Is there a less inconvenient way to get the generated output into the normal docx mode? I would like to get the final output by running a shell script on the Markdown input.
The issues I have found so far in my limited tests are warnings about insufficient color contrasts and sequences of blank characters. Some of these (e.g., colors in section headers and hyperlinks) seem to be fixable by using a custom reference document with modified styles. The warnings associated with code blocks, highlighting, etc., seem more problematic.