SEO Toolkit

All-in-one SEO analysis: on-page score, SERP preview, keyword density, broken links, heading structure, and meta tag viewer.

SEO Toolkit is a comprehensive, all-in-one SEO analysis extension for Chrome. Analyze any webpage instantly with 6 powerful tools: **On-Page SEO Score** Get an instant SEO score out of 100 with a detailed checklist covering title, description, headings, images, canonical URLs, Open Graph, Twitter Cards, viewport, robots, and links. **SERP Preview** See exactly how your page will appear in Google search results. Toggle between desktop and mobile views with real-time character counters. **Keyword Density** Analyze word frequency with 1-word, 2-word, and 3-word phrase tables. Click any keyword to highlight all occurrences on the page. **Broken Link Checker** Scan all links on the page, check their status, and identify broken links. Export results as CSV. Broken links are highlighted directly on the page. **Heading Structure** Visualize the heading hierarchy (H1-H6) as an indented tree. Detect issues like missing H1, multiple H1 tags, and skipped heading levels. Click to scroll to any heading. **Meta/OG Previewer** View all meta tags in a clean table format. Preview how your page will look when shared on Facebook, Twitter/X, and Slack. Key Features: - No server required - all analysis runs locally - Works on any webpage - Clean, tabbed interface - Lightweight and fast - Available in English and Korean