BACKLNK

Backlnk is a free educational website about SEO, search visibility and AI visibility. It helps site owners, marketers, developers and SEO specialists understand why a page is or is not found in search engines and AI answers, and what to fix. Free tools: 15 website checks, including an Indexability Checker, AI Crawler Access Checker, llms.txt Generator & Validator, Entity Signal & Schema Checker, Sitemap Hygiene Auditor, Redirect & HTTP Header Checker, Hreflang Validator and Page Speed Test. Each result shows what was measured, when, and with what limits. A free full audit runs every check at once and delivers one designed PDF report by e-mail. Guides: step-by-step articles on technical SEO, on-page SEO and AI visibility, each with a short answer first and sources from official documentation. Research: an open dataset on AI crawler access in the robots.txt files of the Tranco top 10,000 sites (CC BY 4.0). No cost, no card, no sign-up.