SEO Facet

On-page SEO in your side panel: readiness, Web Vitals, schema, content, links, sitemaps, and crawl diagnostics.

See every facet of a page's SEO, instantly, in the side panel. SEO Facet analyzes the rendered page you are viewing and presents its on-page SEO in a clean docked side panel or resizable overlay. No copy-pasting URLs, no View Source, and no account. Open it with one click, or with Ctrl+Shift+E (Cmd+Shift+E on Mac), on any website. Display settings let you choose the native dock or a remembered 360–800 px overlay width. What you get • A Preliminary or Verified SEO readiness indicator based only on universal readiness checks, with Errors and Warnings filters. Secondary diagnostics remain score-neutral. • Current-visit Web Vitals for LCP, INP, CLS, FCP, and TTFB when the browser exposes them. These are local observations, not CrUX or PageSpeed field data. • 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 breadcrumbs: detects JSON-LD types, validates required and recommended rich-result properties, and separately identifies rendered HTML breadcrumb trails. • Headings: H1 to H6 counts and a full outline, with click-to-locate navigation and level highlighting. • Images: alt-text coverage, decorative and oversized findings, dimensions, thumbnails, exact page location, and filter-based group highlighting. • Links: internal, external, nofollow, unique, and missing-anchor classifications, exact or destination-group highlighting, and an on-demand broken-link checker. Access-restricted responses are not mislabeled as broken. • Social previews: visual Facebook, X (Twitter), and LinkedIn cards. • Sitemap Audit: discovers sitemap directives and nested indexes, identifies whether the current page is listed and in which files, summarizes URL sets and lastmod coverage, and optionally checks each selected sitemap URL with bounded concurrency. • Crawl diagnostics: Page readiness, an on-demand redirect-aware Technical Audit, Mobile Diagnostics, and Accessibility Diagnostics. Technical evidence includes response headers, X-Robots-Tag, robots.txt rules, and sitemap directives. • Deep scan for lazy content, reversible page highlighting with Clear All, and one-click CSV export. Private by design. Page content and analysis results stay in your browser and are never sent to SEO Facet, analytics providers, advertisers, or data brokers. Only user-initiated Broken Link, Sitemap, and Technical Audit checks contact the relevant websites directly to report their status. Built as a lightweight, dependency-free extension. Fast, focused, and made for SEOs, developers, and content teams who want answers without leaving the page.