I don’t know of any solution that would allow to scan entire pages, but here is a local tool to get LaTeX math from images via OCR https://github.com/lukas-blecher/LaTeX-OCR
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Hey what if my software is paid, but you can purchase it for N money or more, with an input field?
Because that I’ve seen a lot, and it sounds suspiciously like what you’re describing, yet completely normal.
Edited for grammar
My first encounter with Linux was in 2007, I installed Kubuntu Gutsy Gibbon on my dad’s computer out of curiosity - I was intrigued by a notion of free OS you can deeply customize.
I have spent countless hours fiddling with the system, mostly ricing (Compiz Fusion totally blew my mind) and checking out FOSS games.
Decades later I switched to Linux full-time. After 12 years of daily driving OS X and working as a developer, I wanted a customizable and lean OS that is easy to maintain and control. Chose Arch, then Nix, havent looked back ever since.