I know nothing about this guy aside from this headline but that checks out.

This is a thing. It just doesn’t work very reliably for the reasons you mentioned.

It does work kind of ok on some comics like the one OP shared and generally pretty well on manga since that tends to be more consistent with the boxes.

I don’t know of anything open source or self hosted that does this though.

Depends on what you mean by “audit”.

I look at the GitHub repo.

• How many stars?
• Last commit?
• Open issues
• Contributer count

Do I read the whole code base? Of course not. But this is way more than I can do with closed source software.