All Free SEO Tools
56 tools across 8 clusters — generators, validators, AI/GEO checkers, calculators and more. All powered by a real engine (Puppeteer, Lighthouse, Cheerio). Enter a URL, get results in seconds.
Schema & Structured Data
Generate, validate and visualise JSON-LD — the generate→validate loop no other free tool offers.
Validate any URL's JSON-LD against Google's rich-result rules
Build structured data for 12+ schema types with live preview
Generate JSON-LD for Product, Article, FAQ, LocalBusiness & more
Visualize any page's JSON-LD as an interactive tree
Build FAQPage JSON-LD and validate it instantly
AI Search & GEO
Own the AI-search layer — check visibility, generate llms.txt, and audit AI-crawler access.
Live test any keyword across ChatGPT, Gemini, Claude & Copilot
Does ChatGPT cite your brand? Check it now
Check your Google Gemini & AI Overview presence
Audit how Anthropic's Claude references your domain
Optimise for Microsoft Copilot & Bing AI search
Auto-generate an llms.txt file from your site structure
Validate and lint your llms.txt for errors
Audit which AI bots your robots.txt allows or blocks
Score your page across 11 GEO ranking factors with fix recommendations
Generate test prompts to check if your content is cited by ChatGPT & Perplexity
Crawling & Indexing
Crawl your site, trace redirect chains, and audit how search engines discover your pages.
Crawl up to 200 pages and surface technical SEO issues at scale
22-module deep-dive: CWV, security, accessibility, structured data
Instant per-page analysis of 20+ SEO signals
Check if your page can be indexed — robots.txt, noindex, canonical, sitemap
Compare Googlebot HTML vs full browser render to catch JS SEO gaps
Build a robots.txt with AI-bot presets in seconds
Test any URL against your robots.txt rules
Find 4xx/5xx links across your entire site
Crawl your site and generate a clean sitemap.xml
Generators & Meta
Build the tags your pages need — preview them before publishing.
Build title, description, OG and Twitter Card tags with live preview
Check all meta tags on any URL — title, description, OG, robots
Check and preview Open Graph tags across Facebook, Twitter & LinkedIn
Multi-platform social card preview for Facebook, X, and LinkedIn
Build complete Open Graph + Twitter Card markup with live preview
See exactly how your title & meta appear in Google (pixel-accurate)
Measure title & description pixel width — Google truncates by pixels, not chars
Generate canonical link elements and prevent duplicate content issues
Build hreflang tags for multilingual sites with x-default support
Validate hreflang tags and reciprocal links across localized pages
Build UTM-tagged URLs for campaign tracking with preview
Core Web Vitals & Performance
Measure speed, CWV, and mobile-friendliness with the same engine Google uses.
Measure LCP, CLS, FCP, TTFB & INP with real browser rendering
Lighthouse-powered performance score with screenshot and opportunities
Test mobile viewport rendering and usability at 375px width
Identify render-blocking scripts and lazy-loaded content issues
Side-by-side CWV delta against any competitor URL
Redirects & Canonicalization
Trace redirect chains, detect loops, and understand how link equity flows.
Content & Keywords
Research, generate and optimise your content for both humans and AI search.
TF-IDF seed extraction + autocomplete expansion + intent clustering
Generate long-tail, LSI and semantic keyword clusters from any seed
Analyse n-gram frequency and TF distribution across page text
Find pages competing for the same keyword — identify and fix cannibalization
Flesch Reading Ease + grade level — essential for AI-citation readiness
Count words, characters, sentences and reading time instantly
Model click-through rates with 2026 CTR curves and AI Overview impact
Calculate traffic value, revenue potential and ROI from SEO
Compare keyword presence and on-page signals against any rival
Security, DNS & Trust
Audit security headers, DNS records and certificate health — signals that affect both rankings and user trust.
Scan CSP, HSTS, X-Frame-Options and 8 more security headers
Grade your HTTP security headers from A+ to F with fix recommendations
Verify SSL certificate validity, expiry date, and HTTPS configuration
Audit A, MX, SPF, DMARC, DKIM and domain health in one scan
Need deeper analysis?
The Full SEO Audit runs all 22 engine modules — Core Web Vitals, security, accessibility, structured data, AI readiness — in a single scan.
Run Full Audit — Free