The SEO basics that decide whether a page can rank
Before a page can rank, search engines need to crawl it, understand it, and trust it. That comes down to a handful of on-page and technical signals: a clear title tag and meta description, exactly one H1, Open Graph tags so your links look right when shared, a canonical URL to avoid duplicate-content dilution, structured data (JSON-LD) that search and AI engines read directly, plus a robots.txt and sitemap.xml so crawlers can find everything.
Miss these and even great content struggles to rank. This checker reads them all in one pass and tells you which are missing.
Why structured data and Open Graph matter more now
Schema (JSON-LD) is increasingly how AI search and LLMs pull answers from a page, not just how Google builds rich results. Open Graph tags control how your page looks when shared on X, LinkedIn, or Slack, and broken previews quietly cost you clicks. Both are easy to add and easy to forget.
We read the page's static HTML, so heavily JavaScript-rendered sites may under-report tags that load client-side.