Fennec SEO Auditor

Fennec SEO Auditor is a Chrome extension that turns your browser into a real‑time SEO audit console. It lives in the Chrome side panel so you can analyze any page without leaving it, and gives you a structured view of on‑page SEO, technical SEO signals, and content quality. 「New feature: Support web site URL redirection link analysis and inspection」 Uages: Comprehensive SEO audit in one click Run a full on‑page SEO audit for the current tab 1.Side panel experience Always visible on the right side of Chrome Audit pages while browsing search results, competitors, or client sites Meta & head tag analysis Page title and meta description length, status, and quality hints Canonical URL, viewport, language, and other critical head tags Heading structure (H1–H6) H1/H2/H3 counts and potential issues (missing, duplicated, over‑used) Quick view of heading distribution for content structure audits Link analysis (internal / external / nofollow) Total links, internal vs external, nofollow usage, duplicate links Link table with URL, anchor text, rel, target, and status Image analysis (alt text & size) Total images, missing or empty alt attributes Large image detection (by estimated file size) Quick preview and original image links Robots.txt & sitemap check Detect robots.txt availability and basic content Check sitemap URLs and sitemap stats (where available) Structured data / Schema.org Detect JSON‑LD, Microdata, RDFa Summary of schema types and implementation quality Simple SERP rich result preview for common schema types Social tags (Open Graph / Twitter) Check OG and Twitter card tags for social sharing optimization Quick launch of third‑party SEO tools One‑click open to Ahrefs, GTmetrix, PageSpeed Insights, Semrush and more (using the current page URL) 2. Who This Extension Is For This extension is built for: SEO specialists and consultants who perform on‑page SEO audits every day Content marketers and copywriters who want to validate titles, descriptions, and headings Technical SEOs who care about robots.txt, sitemaps, schema markup, and HTTP headers Product managers and growth teams who need quick SEO checks without leaving the browser If you regularly check title tags, descriptions, headings, canonical URLs, structured data, or link quality, Fennec SEO Auditor helps you do it faster inside Chrome. 3. Installation & First Run 3.1 Install from the Chrome Web Store Open the Chrome Web Store. Search for “Fennec SEO Auditor” or “SEO audit side panel”. Click Add to Chrome. Confirm the permissions (tabs, activeTab, sidePanel, offscreen, contextMenus, storage, etc.). The extension needs access to the current tab to read on‑page HTML and run a full SEO audit. It does not modify the page content. 3.2 Open the side panel After installation: Click the Fennec SEO Auditor icon in the Chrome toolbar. The Chrome side panel will open on the right side. You will see the main Comprehensive Audit view with a loading indicator. The extension automatically runs an initial SEO audit for the active page (unless the URL is a restricted browser page such as chrome://). 4. Using the Side Panel – Main Workflow 4.1 Run a comprehensive SEO audit There are two main ways to start an audit: Side panel home (house icon) Click the home icon in the left menu (Comprehensive Audit). This will: Reload the main audit UI Run a fresh SEO audit for the current page Refresh button in the top bar Click the refresh icon next to the extension title to re‑run the audit. During the audit: A loading overlay is shown Progress messages appear in the internal log Once done, all sections (overview, links, images, robots, schema, social, etc.) are populated 5. Using Individual SEO Tools (Sub‑Tools) The left menu contains dedicated tools which reuse the same analysis data: H Tags – heading structure and best‑practice hints Schema Analysis – structured data detection and SERP‑style preview Link Analysis – internal / external / nofollow link stats plus detailed table Image Analysis – missing alt text, broken images, large images Meta / Head Detection – detailed head tag breakdown Social Analysis – Open Graph & Twitter card summary Robots.txt Analysis – robots.txt presence, content, Disallow / Sitemap lines Sitemap Analysis – sitemap URLs and basic stats LLMs.txt Check – simple check for AI/LLM‑related declarations What’s Run Detection – lightweight detection of technologies running on the page When you click one of these items: The side panel loads the tool UI. The extension reuses the latest analyzed page data when possible. For tools that require additional network checks (robots.txt, sitemap), extra requests are made in the background. You can always click Comprehensive Audit (home icon) again to return to the full overview and re‑run the complete audit. 6. Context Menu Integration (Right‑Click Menu) Fennec SEO Auditor also adds a page context menu for quick access to external tools. Right‑click on any page. Look for “Fenne SEO Auditor” in the context menu. Use the submenu to: Open Website Authority Checker (Ahrefs) Launch Backlink Checker Run a Broken Link Checker Open PageSpeed Insights View the site in Google, Bing, Yandex, or Baidu search (site:domain) View historical snapshots in Archive.org This is useful when you want to combine on‑page SEO audit with off‑page signals and performance checks. 7. Troubleshooting If you encounter issues: Side panel shows “forbidden” Chrome’s internal pages (e.g. chrome://, chrome-extension://, about:blank, some special URLs) cannot be audited. Open a normal HTTP(S) page instead. Audit appears stuck on “loading” Click the refresh button or the Comprehensive Audit (home icon) again. This triggers a fresh audit for the current URL. Robots.txt or sitemap reported as “not found” Some sites intentionally skip robots.txt or sitemap.xml, or use non‑standard locations. The extension reports what is publicly available at common endpoints. If problems persist, try: Refreshing the page Disabling co…