SEOcrawl SEO Extension

Technical on-page SEO is covered in full by this free extension, which analyzes metadata, headings and more in a single click, with no usage limits. It lists headings and flags missing ones, shows internal and external links with status codes and anchor text, and displays every hreflang tag on a page along with any missing a return link. Social metadata such as Open Graph and Twitter Card is covered too. Unlike toolbars built around domain authority scores, it concentrates on rendered on-page and technical elements. Connecting a free SEOcrawl account unlocks additional features in the extension. It suits SEO professionals reviewing individual pages who want a full technical read of each one without leaving the browser or opening a separate crawler.