We have a help in PDF format in Romanian (we also have in in MS Word format). It has around 200 PDF pages.
We want to have a html for each small section in the help so we include it on our website.
The HTMLs will have title, H1 and other SEO elements.
You can reuse the code form one page to another as long as the content (text) is the right one for each page.
Automated tools do not provide SEO friendly HTML, we have tried. If you use such a tool, you must make sure that the SEO elements are correct.
We are a dev company so the source will be easily checked.