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Free on-page SEO analyzer. Audit meta tags, open graph, images, links, and SERP previews, all in one lightweight Chrome extension. Stop switching between five tabs to check one page. SEO Captain is a free SEO extension for Chrome that gives you a complete on-page analysis of any webpage in seconds, directly in your browser. Eight specialized modules. One install. Zero subscriptions. WHY SEO CAPTAIN? Most SEO Chrome extensions either check one thing or bury you in panels built for power users. SEO Captain was designed to be the one extension that covers every on-page signal you actually care about, in a clean and fast interface that works for beginners and seasoned SEO professionals alike. THE 8 MODULES SEO AUDIT Get an instant health check of any page. SEO Captain analyzes your title tag, meta description, heading structure, canonical URL, robots directives, and indexability status so you catch critical issues before they impact your rankings. IMAGE AUDIT Every image missing an alt attribute is a missed ranking signal. SEO Captain surfaces all images on the page, flags those without alt text, and gives you a full image audit without leaving your browser. Invaluable for e-commerce product pages and content-heavy blogs. LINK ANALYSIS See every internal and external link on the page in one view. Identify nofollow attributes, audit anchor text distribution, and understand how link equity flows across the page, all without opening a separate tool. TITLE AND DESCRIPTION GENERATOR Analyze and generate optimized title tags and meta descriptions with live character count guidance. Know exactly whether your copy fits within SERP display limits before you publish. SERP PREVIEW See how your page appears in Google search results before it goes live. Preview your title and meta description across both desktop and mobile viewports to catch truncation and formatting issues early. OPEN GRAPH AND SOCIAL PREVIEW Check how your page renders when shared on Facebook, LinkedIn, Twitter, and WhatsApp. Audit og:title, og:description, og:image, and Twitter Card tags in one place so your content looks sharp every time it gets shared. META TAG SUMMARY Get a full readout of every meta tag on the page including robots, viewport, charset, author, and any custom tags, laid out clearly for fast auditing. CONTENT ANALYSIS Understand what signals your page sends to search engines. Analyze heading structure, keyword usage, and content depth to identify exactly what needs improvement before you optimize. WHO IS SEO CAPTAIN FOR? SEO Professionals and Agencies: Run fast on-page audits across client sites without logging into a dashboard for every check. WordPress Bloggers and Publishers: Verify every post is fully optimized before hitting publish. Shopify Founders: Audit product pages, collection pages, and landing pages for SEO health at scale. Indie Hackers and Micro-SaaS Builders: Get the ranking signals you need without paying for an enterprise subscription. CMOs and Marketing Leaders: Pull page-level SEO data quickly for client presentations and internal reviews. START IN UNDER 60 SECONDS Install SEO Captain from the Chrome Web Store, navigate to any webpage, and click the extension icon. Your full on-page SEO analysis loads instantly, no account, no setup, no waiting. COMPLETELY FREE SEO Captain is 100% free to install and use. No trial period, no account required, no hidden limits. Install it today and start auditing any page for free.