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All-in-one SEO toolkit: audit any page, check SERPs, research keywords, validate schema — powered by AI, GSC & GA4. Lumina – Your All-in-One SEO & GEO Browser Extension Lumina is a comprehensive SEO toolkit built for SEO professionals, web developers, and content marketers. Analyze any webpage with one click — directly in your browser. From technical audits to AI-powered content optimization, Lumina combines the features of multiple tools into a single, fast extension. 🛡️ No ads. No third-party tracking. No account required. ✅ Works instantly — no setup needed for on-page SEO, headings, links, images, schema validation, crawling, robots.txt, llms.txt, hreflang, semantic checks, and more. 🔑 Connect your own API keys to unlock: AI-powered content tools (OpenAI), keyword research & SERP analysis (DataForSEO), PageSpeed Insights (Google), and live Google Search Console & GA4 dashboards (free Google OAuth — your data stays between you and Google). ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ FEATURES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📊 Overview & Meta Data Get a quick health check of any page's most critical ranking factors. ➤ Title & Meta Description: character count, pixel-width measurement, and SERP truncation warnings ➤ Live SERP Preview: edit title and description in real time, switch between desktop and mobile, export as image ➤ HTTP Status, Canonical, Meta Robots, X-Robots-Tag — all at a glance ➤ Indexation Alarm: the extension icon turns 🟢 green (indexable), 🟡 yellow (warning), or 🔴 red (blocked) — visible without opening the popup ➤ URL in Sitemap check: automatically verifies if the current page is included in the XML sitemap 🕷️ Crawling & Indexing Avoid critical technical SEO mistakes that prevent search engines from indexing your pages. ➤ Robots.txt live analysis with syntax highlighting and per-bot access checks ➤ XML Sitemap detection (including sitemap index support) ➤ Hreflang validation with return-tag live checker ➤ Broken link checker with on-page highlighting (green = OK, yellow = redirect, red = broken) ➤ JS vs. No-JS comparison: see what content is missing when JavaScript is disabled — critical for AI crawlers that don't execute JS ➤ Redirect chain tracking (captured via background service worker) 🤖 AI & GEO Readiness Lumina is one of the first SEO extensions with a dedicated focus on Generative Engine Optimization (GEO). ➤ AI Crawler Access Check: see which AI bots (GPTBot, ClaudeBot, PerplexityBot, Google-Extended, etc.) are allowed or blocked via robots.txt ➤ llms.txt Check: verifies if the site has an llms.txt file that guides AI crawlers on what content to index and cite ➤ AI Traffic Dashboard (GA4): see how much traffic comes from ChatGPT, Perplexity, Claude, Gemini, Copilot, and others — with per-platform breakdown, monthly trend chart, and conversion comparison vs. other channels 📝 Content & Heading Structure ➤ H1–H6 heading tree with structural error detection ➤ On-page heading highlighting: color-coded badges directly on the live page (H1 red, H2 blue, H3 green, etc.) ➤ Word count, semantic HTML5 landmark analysis ➤ Copy and CSV export for SEO audits 🔗 Link Analysis ➤ Complete link extraction: internal, external, nofollow, dofollow, duplicates ➤ Anchor text listing ➤ Live broken link checker with progress bar and on-page highlighting ➤ Internal link frequency ranking 🖼️ Image SEO ➤ Missing ALT tag detection ➤ Image dimensions, format (WebP, JPG, PNG), and lazy loading checks ➤ Export to CSV ⚙️ Schema / Structured Data ➤ JSON-LD extraction with syntax-highlighted viewer ➤ Deep validation: checks schema content against actual page content (prices, dates, FAQs, addresses — not just syntax) ➤ Google Required Fields check per schema type ➤ AI-powered Schema Generator: analyzes the page, recommends schema types, cross-references data from other pages on the site, and generates production-ready JSON-LD ➤ One-click fix for validation issues ➤ Direct links to Google Rich Results Test and Schema.org Validator 📱 Social Media ➤ Open Graph (OG) title, description, and image preview ➤ Twitter Card analysis ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ POWER FEATURES (with API keys) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔍 Google Search Console (free Google OAuth) ➤ Full GSC dashboard inside the extension: clicks, impressions, CTR, position ➤ Time-series chart with comparison overlay (previous period / year over year) ➤ Top queries and pages with volume enrichment ➤ Advanced analysis: keyword cannibalization, winners/losers, low-hanging fruit, page-level comparison 📈 Google Analytics 4 (free Google OAuth) ➤ Full GA4 dashboard: sessions, users, pageviews, engagement rate, bounce rate, conversions ➤ Time-series chart with comparison line ➤ Data tables: Sources, Pages, Countries, Devices ➤ Conversion section: trend chart, by channel, by landing page, event selector ➤ User Journeys: next pages after landing, exit pages with bounce rates ➤ GSC × GA4 Cross-Reference: find pages with high impressions but low CTR, good rankings but high bounce ➤ AI Traffic Dashboard: monthly trend, per-platform breakdown, conversion comparison 🔎 Keyword Research & SERP Analysis (DataForSEO) ➤ Keyword volume, CPC, competition, monthly trends with sparklines ➤ Related keywords and long-tail suggestions ➤ Live SERP checker: see who ranks for any keyword, SERP features, keyword overlap analysis ➤ Define target keywords per URL with primary/secondary tracking 🤖 AI-Powered SEO Tools (OpenAI) ➤ Ask AI: ChatGPT-style SEO copilot with full page context, GSC data, and GA4 data ➤ Content Optimizer: rewrite suggestions based on keyword targets and competitor analysis ➤ Meta Title & Description Generator: AI suggestions with live SERP preview and pixel measurement ➤ FAQ Schema Generator ➤ SEO Localization: translate and adapt content for international markets ➤ Competitor Analysis: fetch and compare competitor pages side by side ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ TOOLS & UTILITIES ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📍 Local Search Simulation: search Google from any location (DE, AT, CH, and more) using UULE parameters — no VPN needed 📷 Full-Page Screenshots: desktop, phone (390px), and tablet (834px) with automatic stitching ⌨️ Keyboard Shortcuts: press 1-9 for tabs, ? for help 🌓 Dark Mode 🔗 Quick links to GSC, PageSpeed, Rich Results Test, SSL Labs, Wayback Machine, and more ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ PRIVACY & PERMISSIONS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Lumina does not collect, transmit, or store any user data on external servers. All analysis happens locally in your browser. API keys are stored in Chrome's encrypted local storage. Google OAuth tokens (GSC/GA4) are stored in Chrome's session storage and cleared when you close the browser. See our full privacy policy for details. Permissions explained: • storage — save your settings and API keys locally • activeTab / tabs — read the current page for analysis • scripting — inject content scripts for on-page features (heading highlighting, link checker) • webRequest — capture HTTP headers (status codes, X-Robots-Tag, security headers) • host_permissions (<all_urls>) — required for robots.txt fetching, broken link checking, and API calls