Free SEO Scanner
Paste any URL — get a 260+ check SEO audit in 30 seconds. No signup, no email, no daily limit. Covers traditional SEO plus AEO (ChatGPT/Perplexity citations) plus GEO (Google AI Overviews).
Free. No signup. Instant report. Public-shareable result page.
What this free SEO scanner checks
The scanner runs 260+ individual signals against the URL you submit. The checks are grouped into three modern audit families — SEO (what Google's classic ranking system evaluates), AEO (Answer Engine Optimization — what ChatGPT, Claude, and Perplexity look for when deciding which sites to cite), and GEO (Generative Engine Optimization — what Google AI Overviews and similar generative systems weight).
138 SEO checks
- Meta tags: title length and uniqueness, meta description, canonical, robots, viewport, language attribute, theme-color, charset, Open Graph, Twitter Cards.
- Content: H1 presence and uniqueness, heading hierarchy, word count, paragraph length, readability, transition words, sentence length, text-to-HTML ratio.
- Technical: HTTPS, HSTS, security headers, mobile-friendliness, hreflang, sitemap discoverability, robots.txt validity, IndexNow integration.
- Schema: JSON-LD validity, BreadcrumbList, Organization, WebSite, common schemas (Article, Product, FAQPage, HowTo, Event).
- Performance: Core Web Vitals (LCP, CLS, INP, TBT, FCP, TTFB, Speed Index) via Google PageSpeed Insights API.
- Accessibility: ARIA landmarks, image ALT text, link descriptiveness, color contrast hints.
- Authority & trust: About page, contact information, privacy policy, terms link, author byline.
55 AEO checks
AEO (Answer Engine Optimization) is the practice of optimizing for AI answer engines. AEO signals include explicit AI-crawler access in robots.txt, the presence of llms.txt, citation-friendly content patterns, FAQ structured data, Speakable specification, and structural patterns that AI extractors prefer (Q&A blocks, definition lists, summary sections). The scanner verifies all of these and gives an AEO score 0-100.
61 GEO checks
GEO (Generative Engine Optimization) is focused on Google AI Overviews and similar generative systems. The GEO checks evaluate content depth, citation patterns, original data presence, multi-perspective writing, author credentials, source diversity, and the structural signals Google's generative system uses when deciding which sources to synthesize into an answer.
8 Core Web Vitals checks
The scanner calls Google's PageSpeed Insights API for the URL you submit and surfaces all 8 Core Web Vitals metrics: Performance Score, LCP (Largest Contentful Paint), CLS (Cumulative Layout Shift), FCP (First Contentful Paint), TBT (Total Blocking Time), Speed Index, INP (Interaction to Next Paint), and TTFB (Time to First Byte). Each metric is scored against Google's official thresholds.
How this scanner compares to other free SEO tools
| Feature | seoscore.tools | Google Lighthouse | Ahrefs Free | PageSpeed Insights |
|---|---|---|---|---|
| SEO checks | 138 | ~15 | ~20 | 0 |
| AEO checks | 55 | 0 | 0 | 0 |
| GEO checks | 61 | 0 | 0 | 0 |
| Core Web Vitals | ✓ | ✓ | limited | ✓ |
| No signup required | ✓ | ✓ | ✗ | ✓ |
| Public shareable report | ✓ | ✗ | limited | ✓ |
| Browser-based, instant | ✓ | requires install | ✓ | ✓ |
How to use the free SEO scanner
- Paste any public URL into the input field above (or on the homepage).
- Click Scan Now. The scanner fetches the page from the Cloudflare edge.
- Wait ~15-30 seconds while 260+ checks run in parallel and the PSI API returns Core Web Vitals.
- Read the prioritized fix list. Critical issues are highlighted first; nice-to-have items are at the bottom.
- Share the report URL with your team, your client, or your own future self. Reports are stored for 90 days.
Best practices for interpreting the scan
Not every failed check is an emergency. The scanner annotates each issue with a priority (Critical, High, Medium, Low) and a brief explanation of the business impact. Focus on Critical and High issues first — these are the ones that materially affect how Google and AI engines understand your site. Medium and Low items are useful for ongoing polish but rarely move rankings by themselves.
If you score below 70 on SEO, your foundation has gaps that should be fixed before investing in content marketing. Below 60 on AEO means AI engines are likely not citing your site for relevant queries. Below 60 on GEO means Google AI Overviews are unlikely to feature your content as a source. A balanced site in 2026 should aim for 85+ across all three.
Related guides
- Complete SEO Audit Checklist (50+ items)
- Perplexity SEO Checker — AI Citation Tracking
- Topical Authority for AEO — 10-Step Plan
- What is AEO? Answer Engine Optimization in 5 Minutes
- What is GEO? Generative Engine Optimization in 5 Minutes
Frequently Asked Questions
Is this SEO scanner really free?
Yes. seoscore.tools runs entirely on Cloudflare Workers with no paid tier. There is no signup, no email gate, no daily limit beyond a 5-scan-per-minute rate limit to prevent abuse. Public report pages are stored for 90 days and shareable.
What exactly does the free SEO scanner check?
260+ individual signals: 138 SEO checks (meta tags, schema, Core Web Vitals, security headers, accessibility), 55 AEO checks (Speakable, llms.txt, FAQ schema, AI-crawler access), 61 GEO checks (citation patterns, content depth, author credentials, source diversity).
How is this different from Ahrefs Free, SEMrush Free, or Lighthouse?
Ahrefs and SEMrush focus on backlinks and keywords. Lighthouse runs ~15 SEO checks. seoscore.tools is the only free scanner that runs 260+ on-page checks and the only free scanner that scores AEO and GEO separately — the two categories that matter for ChatGPT, Perplexity, and Google AI Overviews in 2026.
How long does a scan take?
Most scans complete in 10-30 seconds. The Worker fetches your page once, runs all 260+ checks in parallel, calls Google PageSpeed Insights for Core Web Vitals data, validates up to 5 internal links, and assembles the final report.
Is the scanner safe to use?
Yes. The scanner only fetches the public HTML of the URL you submit — exactly what any other crawler does. It does not submit forms, execute JavaScript, or store credentials. Private and internal URLs are explicitly blocked by SSRF protection.