BacklinkIndex is a 100% free backlink discovery engine and public directory platform. It solves slow search engine indexing by rendering backlinks into static HTML pages with Schema.org JSON-LD microdata and auto-pinging the IndexNow Protocol API to notify Microsoft Bing, Yandex, and crawler bots instantly. Includes a free live DoFollow/NoFollow DOM inspector to audit anchor attributes and status codes in real-time. Zero paywalls, zero limits.