Chrome Script code to get free dlcs on steam.

i remember a sg thread with some js code to insert in the chrome inspect elements page (or was a tampermonkey script?) that would tell you if there were free dlcs for your games and list them on a page, it would list free steam games that would give +1 too, with links to steamdb so you could install them easily.

does anyone know what i'm talking about? i've bought lots of games, and i know some of these games have free dlcs, this script or whatever would list those games i think.