Check out this really nice approach to rendering fully static LaTeX with hugo by caching remote fetches from a quick and simple KaTeX API. Really clever — glad to see that someone tried it. Custom output formats and remote fetching at compile time are two very important features.
If you’re not familiar with deno, try out the api with the command deno run.
$ deno run --allow-net main.ts Listening on http://localhost:8000