I just found out https://typst.app/play/ - this is an absolute gamechanger. Tried it for a minute, but already loving it.

This is basically their monetization strategy btw – the SaaS offering is exactly this app, but with cloud sync and collaboration features. This part is proprietary, sadly, but I’d say fair enough considering it pays for the compiler and other tooling (FOSS).

It even supports vim bindings :-)