SEO Tools PRO — Auditoría On-Page

Auditoría SEO on-page en un clic: meta, Open Graph, schema.org, hreflang, enlaces, velocidad, Core Web Vitals, legibilidad,…

SEO Tools PRO — Instant On-Page SEO Audit + Live Google Rank Tracker, Right In Your Browser. The fastest way to audit any page's SEO and track Google rankings — free, unlimited, no login. Built for professionals who want answers, not a SaaS bill. One click reveals everything that matters: title, meta, schema.org markup, Core Web Vitals, link health, image audit, keyword density, and a 100-point SEO score. Plus a live Keyword Rank Tracker that measures your TRUE organic position on 20+ Google domains — separated from the visual position that counts ads, AI Overview, and featured snippets above you. ▸ WHY TEAMS PICK SEO TOOLS PRO • Free forever. No trial, no upsell, no upgrade prompts. • Works in any country — 20 Google search domains, 8 native UI languages. • Honest numbers. Organic position is reported separately from visual position. • Privacy-first. Everything runs locally. No tracking by default. • Lightweight. ~150 KB. Loads in milliseconds. Zero third-party libraries. ▸ LIVE GOOGLE RANK TRACKER (FLAGSHIP) Enter a keyword + target domain. We open Google in a new tab and our content script reads the live SERP to compute: • Your real ORGANIC position • Your VISUAL position (counts ads, featured snippets, AI Overview, PAA, knowledge panel, image / video / news packs above you) • Multi-occurrence warning when your domain ranks more than once • AI Overview citation detection in 8 languages — knows when Google's AI cites your domain • Visual overlay: #N badge next to every organic result, 🎯 sticker on your domain, sticky summary bar Supports 20 Google domains: .com, .com.vn, .co.uk, .de, .fr, .es, .it, .com.au, .ca, .co.jp, .co.kr, .com.br, .com.mx, .com.tr, .com.sg, .com.hk, .co.in, .com.tw, .pl, .nl. Multi-page accumulation: scroll to page 2, 3, 4 — we merge with a 30-minute freshness window. History of 50 checks with one-click re-scan. ▸ ON-PAGE SEO AUDIT 100-Point SEO Score — weighted across 16 factors with pass / warn / fail and an animated gauge. Click any quickstat to filter to just Passed, Warnings, or Failed. Schema.org Reader — parses JSON-LD (including @graph and root arrays from Yoast / RankMath / Schema App), Microdata (itemscope / itemtype / itemprop), and RDFa Lite (typeof / property). Matches Schema.org Validator's entity count. Tree view shows nested entities (HowToStep × 4, Product Offer, Article author + publisher + ImageObject). One-click jump to Google Rich Results Test. Core Web Vitals — LCP, CLS, INP measured with web.dev's official thresholds via PerformanceObserver. No third-party services. Meta & Social Preview — pixel-accurate Open Graph and Twitter Card previews exactly as your link will look when shared. Title, meta description, canonical, robots, hreflang. Link Inspector — every row shows anchor + URL. Click to expand: full URL, raw href, title, rel breakdown (nofollow / sponsored / ugc / noopener / noreferrer), target. Detects tabnabbing (target="_blank" without rel="noopener"). Filter by internal / external / nofollow / warnings. Plus: Heading H1–H6 tree, image audit (alt / width / height / lazy-loading), readability (Flesch + reading time), keyword density (1- to 6-gram, 5 language stop-word lists auto-selected), technical health (HTTPS, viewport, robots.txt + sitemap.xml probe, mixed-content detector), page performance (TTFB / FCP / heaviest resources). ▸ EXPORT & WORKFLOW • Export as JSON, CSV (formula-injection-protected for Excel safety), or self-contained HTML — ready for client deliverables • 8 native UI languages: English, Vietnamese, German, French, Spanish, Japanese, Korean, Simplified Chinese • Light / Dark / Auto theme — syncs with your OS in real time • WCAG 2.2 AA accessibility — full ARIA tab pattern, keyboard nav, focus-visible, prefers-reduced-motion, forced-colors • 10-tab dashboard in a 720 × 540 (4:3) popup that respects your eyes ▸ WHO IT'S FOR • SEO specialists running dozens of on-page audits and rank checks per day • Agencies producing client-facing audit + ranking reports • Content writers checking meta, headings, and keyword balance before publish • Web developers validating schema.org / JSON-LD / Microdata / RDFa output • Vietnamese SEO consultants needing google.com.vn rank tracking with AI Overview detection • Small-business owners who want a professional second opinion on their own site ▸ PRIVACY — HONEST DISCLOSURE No account. No login. No profile. No tracking by default. What runs locally only: • On-page audit — reads the active tab when you click the icon • Rank tracker — runs only on Google search pages you visit • Rank history (50 entries) + affiliate click counters — stored on your device in chrome.storage; never transmitted Optional diagnostic telemetry (OFF by default): If you enable it in Settings, the extension logs anonymous scan-complete events (version, browser kind, sanitized score, counts) to a local 200-event ring buffer. URLs, hostnames, page contents auto-redacted. Optional self-hosted beacon endpoint — if blank, the log stays purely on your machine. ▸ AFFILIATE DISCLOSURE The footer's Smart Tool Recommendations slot surfaces one context-aware partner suggestion based on the tab you're viewing — KWFinder when reviewing content, LinkMiner when auditing backlinks, SiteGround / Hostinger when reviewing performance, etc. Partners: SE Ranking, Mangools (KWFinder, SERPChecker, SERPWatcher, LinkMiner, SiteProfiler), SiteGround, Hostinger, Make.com, Parallels, Envato. Each link is clearly labeled "Affiliate" / "Quảng cáo" and includes affiliate tracking codes plus UTM tags. The partner sees that you arrived from this extension — never which page you were auditing. We earn a small commission if you sign up; the price you pay is the same. Toggle off anytime in Settings → "Tool recommendations". ▸ PERMISSIONS • activeTab — read the focused tab when you click the icon • scripting — inject the audit scanner • storage — persist settings, 50-entry rank history, click counters • downloads — export audits as JSON / CSV / HTML • alarms — periodic freshness check for rank results • Content scripts on Google search pages — required for live SERP rank tracking; runs only on the 20 listed Google domains, never any other site ▸ ABOUT Built and maintained by VLINK ASIA — a Vietnam-based digital marketing studio focused on practical, no-nonsense SEO. Feedback and feature requests welcome at https://www.vlink.asia/en/seo-tools/seo-tools-check/ ★ CHANGELOG v2.6.15 — May 2026 • Affiliate disclosure label upgraded for FTC and Chrome Web Store compliance clarity. v2.6.14 — May 2026 • Popup resized to 720 × 540 (4:3 ratio) for comfortable above-the-fold density. v2.6.13 — May 2026 • Tool-recommendation CTAs rewritten as action-context ("Find better keywords for this page" instead of "Try KWFinder"). v2.6.12 — May 2026 • Smart Tool Recommendations in footer — context-aware partner suggestions based on the active tab. Always disclosed, always toggleable. v2.6.11 — May 2026 • Rank history bumped to 50 entries. • One-click "re-check" button on every history row. v2.6.10 — May 2026 • Tab reorder: Rank Tracker moved to position 2 (right after Overview). v2.6.0 – 2.6.9 — May 2026 • NEW: Keyword Rank Tracker. Type a keyword + target domain → opens Google search → content script reports your real organic position with a visual SERP overlay. • 20 Google domains supported. • Smart SERP block classification: organic vs ad vs featured snippet vs AI Overview vs PAA vs knowledge panel vs image / video / news pack. • AI Overview citation detector with multi-locale heading text matching (en, vi, de, fr, es, ja, ko, zh). • Multi-page accumulation: merges results from pages 1, 2, 3, 4 with 30-minute freshness window. • Multi-occurrence warning when your domain ranks more than once. • Visual overlay: gutter badges (#N), sticky summary bar with host chip and pages-scanned count, ring highlight on your domain's result. • Auto-fill target host from the active tab; auto-select Google engine from UI language. v2.5.x — May 2026 • 6 additional UI locales: German, French, Spanish, Japanese, Korean, Simplified Chinese (total: 8 languages). • Refreshed branding + new icon set. • Opt-in diagnostic telemetry framework (off by default, local 200-event ring buffer, PII auto-redaction, optional self-hosted beacon). v2.4.x — May 2026 • Settings overhaul: theme cycle, default-tab picker, per-module toggles for Open Graph, Hreflang, Links, Density, Robots probe, Performance, and Rank Tracker. • Module-level disable: turn off cards you don't use to slim the popup. • Smart language switcher in topbar — UI changes instantly without reload. v2.3.2 — May 2026 • Link inspector overhaul: every row shows both anchor text AND URL, click to expand for full detail (anchor, URL, raw href, title, rel, target). • Image-only anchors now surface the img alt attribute as fallback anchor text, with an indicator badge. • Tabnabbing detection: flags target="_blank" links missing rel="noopener". • Empty href and no-text warnings shown inline as badges. v2.3.1 — May 2026 • Added 4-gram, 5-gram, and 6-gram long-phrase analysis with segmented switcher. v2.3.0 — May 2026 • Core Web Vitals: LCP, CLS, INP with Google's official thresholds (web.dev/vitals). • Mixed-content detector for HTTPS pages loading HTTP subresources. • Multi-language stop-words: English, Vietnamese, Spanish, French, German (auto from HTML lang). • Vietnamese popup UI via Chrome i18n — automatic for vi-* browser locales. • Light / Dark / Auto theme with live system-theme syncing. v2.2.x — May 2026 • Three-state scoring criteria (pass / warn / fail) replacing binary pass / fail. • Quickstats clickable as filters. • Tree view for nested schema entities. • Full Microdata parser, RDFa Lite parser, recursive @type discovery in JSON-LD. v2.2.0 — May 2026 • MV3 hardening, internationalization scaffold, stricter CSP, WCAG 2.2 AA accessibility, CSV injection-safe export, -700 KB legacy dependencies stripped (jQuery, Bootstrap, Font Awesome, Glyphicons). v2.1.0 — May 2026 • Initial Chrome Web Store launch.