Detect/track Reddit crossposts effortlessly! Crosspost Checker reveals content spread across subreddits in real time. Key Features: Chain & Timeline: Track lineage & posting order. Duplicates & History: Spot shared URLs & user multi-posting. How it works: Click the button next to "Share" on any post or right-click a link to open the side panel. Privacy: 100% local, no tracking; uses Reddit's public API. Needs a Reddit login.