SEO Website Checker

Modern on-page and technical SEO checker with actionable insights.

SEO Website Checker — Complete On-Page SEO Analysis SEO Website Checker gives you a full SEO audit of any webpage directly from your browser. No sign-up required. No redirects. Just click the extension and get instant results. 🔍 What It Analyzes Overview & SEO Score Get an overall SEO health score out of 100 with a clear GOOD / WARN / BAD rating system. See your page load time, word count, and broken link count at a glance. On-Page SEO Check title tag length, meta description, canonical URL, robots tag, and heading structure (H1–H6). Instantly spot missing or misconfigured tags that hurt your rankings. Technical SEO Audit HTTPS status, mobile-friendliness, image ALT tag coverage, internal vs external link count, Open Graph tags, Twitter Cards, Schema JSON-LD, and RDFa markup. Keyword Density See the top keywords found on any page with their exact density percentages. All stop words are filtered for accurate, actionable results. Traffic Estimates View estimated monthly visits for any domain. Connect your Semrush API key in Settings to pull real traffic data. Backlink Analysis See total backlinks, referring domains, and DoFollow vs NoFollow split. Connect your Ahrefs API key in Settings for live backlink data. Links Audit Review all internal and external links on the page, identify broken internal links, and spot empty anchor text issues. Export Reports Export your full SEO report as a PDF or JSON file for sharing with clients or saving for later. ✅ Key Features Instant SEO score out of 100 8 analysis tabs: Overview, On-Page SEO, Technical, Keywords, Traffic, Backlinks, Links, Settings GOOD / WARN / BAD rating for every metric Keyword density with stop-word filtering Heading structure visualization Social & Schema markup detection Export reports as PDF or JSON Optional Semrush & Ahrefs API integration for real data Dark / Light theme toggle Works on any website — no account required 🔑 API Integrations (Optional) Connect your own Semrush or Ahrefs API key in the Settings tab to replace estimated data with real traffic and backlink figures. API keys are stored locally in Chrome storage and are only used for official API calls to those services. 🔒 Privacy This extension does not collect, transmit, or store any personal data. All analysis runs locally in your browser. API keys you provide are stored only in Chrome's local storage and sent directly to Semrush or Ahrefs — never to any third-party server. 📌 Permissions Used activeTab — to analyze the page you are currently viewing scripting — to read page content for SEO analysis storage — to save your last report and API keys locally downloads — to export PDF and JSON reports to your device