There are path dependance issues here. Sadly, TeX is (today) wedded way too much to the PDF format, which not only has tons of baggage, but also is not really

There are path dependance issues here. Sadly, TeX is (today) wedded way too much to the PDF format, which not only has tons of baggage, but also is not really appropriate for digital documents. HTML is probably the best digital document format we have, and hopefully more people will try again to make it into a self-contained document format : https://www.russellbeattie.com/notes/posts/the-decades-long-html-bundle-quagmire.html https://www.russellbeattie.com/notes/posts/the-decades-long-... The TeXmacs editor - not to be confused with TeX or emacs, exports and imports to HTML, thanks to MathML : https://www.texmacs.org/tmweb/help/faq.en.html#general-1 https://www.texmacs.org/tmweb/help/faq.en.html#general-1 For instance : http://www.texmacs.org/joris/naw/naw.html http://www.texmacs.org/joris/naw/naw.html (EDIT : oops, at least it used to use MathML, I guess they might have made it optional considering the lack of support by Chrome ?) Also, LaTeX specifically has the issue that a LOT of its tooling has poor Unicode support, though Lua(La)TeX and Xe(La)Tex are trying to make that better.