SEO Facet

On-page SEO in your side panel: meta, schema validation, headings, images, links, and a technical audit.

See every facet of a page's SEO, instantly, in the side panel. SEO Facet analyzes the on-page SEO of the page you are viewing and lays it out in a clean, dockable side panel with a health bar and a prioritized issue list. No copy-pasting URLs, no View Source, no account. Everything runs locally in your browser. Open it with one click, or with Ctrl+Shift+E (Cmd+Shift+E on Mac), on any website. What you get • A visual health bar with a prioritized, clickable issue list. Filter instantly by Errors, Warnings, or Passed. • Meta: title and description with length checks, canonical status (self vs variant), robots, keywords, author, publisher, viewport, charset, lang, and favicon, plus a Google SERP preview. • Schema and validator: detects JSON-LD types and validates each against Google's rich-result rules, flagging missing required and recommended properties. • Headings: H1 to H6 counts and a full outline, flagging a missing or duplicate H1 and skipped levels. • Images: total, alt-text coverage, decorative vs missing alt, dimensions, and file sizes. • Links: internal, external, nofollow, unique, and no-anchor, with a built-in broken-link checker (bot-blocked links are shown as "blocked", not broken). • Social previews: visual Facebook, X (Twitter), and LinkedIn cards. • Technical audit: HTTPS, meta robots, and canonical, plus on-demand HTTP status, X-Robots-Tag, robots.txt allow/disallow with wildcard matching, and XML sitemap discovery. • Deep scan to load lazy content before analysis, and one-click CSV export. Private by design. SEO Facet has no servers and collects no data. All analysis happens on your device. The optional "Check broken links" and "Technical audit" features make requests directly from your browser to the links and sites being checked (and their robots.txt and sitemap) purely to report their status. Nothing is ever sent to us. Built as a lightweight, dependency-free extension. Fast, focused, and made for SEOs, developers, and content teams who want answers without leaving the page.