Backloggery interop [greasyfork.org]: userscript for Backloggery [backloggery.com] that allows you to add direct links to the pages of the games you own, display game icons, collected stats and much more!

Currently integrated with Steam (+SteamDB & AStats), GOG, HumbleBundle, Itch, Epic (by uploading launcher cache file), DekuDeals, PSNProfiles, and RetroAchievements.

(you can find screenshots/visual mini-guide at the bottom of the userscript page)