[aheckler]

> Is there any software out there that can reliably identify screenshots.

Google Photos. Their web interface has a special section where it collects screenshots[0], or at least what it thinks are screenshots. It's not perfect, but is better than nothing.

[0] https://photos.google.com/search/Screenshots

[nsteel]

Anything offline? Sorry, when I said "my google photos" I actually meant the photo folder on my NAS that is partially populated with the result of a Google Takeaway last year. I used to use Google Photos but I stopped.