I use KaTex (https://katex.org/) as part of static site generation, and I get LaTeX quality output (because it duplicates LaTeX's algorithm) using only CSS.
Using the eqn and troff suite in 2025 ... I'll just say there's a better way. LaTeX is arcane enough, but at least it is a universal standard in mathematical publication that it pays off to learn a little.
Oh, absolutely. I just have an unhealthy fascination with old tech, so I went into this with the specific goal of using eqn, rather than LaTex. I write LaTex all day for my day job, and I wanted a reason to use something else.
Using the eqn and troff suite in 2025 ... I'll just say there's a better way. LaTeX is arcane enough, but at least it is a universal standard in mathematical publication that it pays off to learn a little.