ContentSpyPro — SEO Extension

ContentSpyPro is a complete SEO extension that runs directly in your Chrome browser. No external servers, no accounts, no data sent anywhere. One click reveals everything about any page's SEO health. Overview — SEO score from 0 to 100 with A+ to F grade. At a glance you see title tag, meta description, canonical URL, robots directives, page language, word count and heading count. It also displays Core Web Vitals metrics including LCP, CLS, FID, INP and TTFB. E-E-A-T signals show whether an author is listed, publish and modified dates, links to authoritative sources and whether the page has an About section. Color-coded indicators instantly reveal what is fine and what needs fixing. Content — Full heading structure H1 through H6 with hierarchy validation. Filter by level, copy to clipboard with one click. Content structure breakdown including paragraphs, lists, tables, blockquotes, images, videos, YouTube embeds and forms. H1 vs page title match check. Structure quality score with specific recommendations. Local SEO — Detects LocalBusiness schema, NAP data meaning business name, address and phone, Google Maps embeds, telephone links, geo meta tags, opening hours, aggregate ratings, social profiles and hreflang tags. Everything extracted locally from the page DOM. Schema — Loads and parses all JSON-LD and Microdata on the page. Shows schema types, validation status and complete raw JSON for each block without truncation. You see exactly the structured data your page sends to Google. Images — Lists every image with dimensions, alt text and file name. Missing alt text highlighted in red. Alt coverage percentage at a glance with filtering by status. Phrases — Extracts single words, word pairs and word triplets from page content. Toggle common word filtering, word cloud visualization and keyword density calculator. Useful for Czech and Slovak SEO where long-tail phrases play a key role. SEO Audit — Enter any keyword and get a complete on-page analysis. Shows presence in title, description, H1, H2, URL and first paragraph with exact occurrences highlighted in context. Includes Flesch-Kincaid readability score. Competition — Build keyword collections, add your page and competitor pages, compare SEO metrics side by side. Quickly identify gaps and opportunities. Export — Export all data to CSV or generate a text summary ready for AI. Paste into ChatGPT, Claude or any other tool for strategic recommendations. Why this SEO extension? • Works on any page including localhost, staging and intranet behind login • Supports both popup and side panel • Interface in Czech and English • No subscriptions, no limits, no upsells • Built by Jarda Pajskr, online marketing specialist — not a SaaS company Privacy: All analysis runs locally in your browser. No data is sent anywhere. No tracking, no cookies, no third-party services.