What's the extension, if you don't mind?

I'd love an extension that classifies images and somehow blocks stock photos or keeps anything that's not a photo like charts and graphs. For crime and police stories, not that I regularly stumble upon those, I want to see the real crime scene or the real perp, but not a stock photo of a police tape or a judge's gavel. If everything is "off", I wouldn't know what I'm missing.