I would even like to be able to search through Facebook content I've viewed. And, of course, I'd want this to be done locally to increase privacy and speed.

Does anyone have a hack for this?

I see a plugin on Chrome called "Full History Search" [1]. I do not trust anything other than a fully open source tool

I understand that there are privacy concerns with this, since you could be storing data locally that is otherwise not public on the internet.

I wonder if it could be done in a safe way. Thoughts?

[1] https://chrome.google.com/webstore/detail/full-history-search/finikongkpikdjdhfofcinijoidlikej?hl=en