Free SEO Scanner — Check Your Website in About 45 Seconds
Run a single-page Google Lighthouse SEO audit. See the checks actually returned for your URL, lab scores and fix guidance — not a full website crawl.
Quick answer
Why doesn't Google rank my website, and what should I check first?
A Lighthouse SEO audit can flag some page-level technical issues, such as indexing directives, missing title or meta description, and non-crawlable anchors. It cannot establish why Google does not rank a page: relevance, competition, authority, internal linking and Google's indexing decisions require separate investigation. A passing lab audit is not proof that a URL is indexed or will rank.
- First thing to rule out
- noindex, robots.txt block, or wrong canonical
- Second
- Missing title and meta description; duplicates need a separate crawl
- Third
- Mobile lab performance; field observations when available
- Fourth
- No internal links to the page
- Audit engine
- Google Lighthouse, mobile and desktop
- Time to a full result
- About 45 seconds, free, no account
What to do next: Scan the exact URL you want ranked — not just the homepage — and fix any indexability issue before touching content or speed.
What the Free SEO Scanner Checks
Single-page Lighthouse SEO audit, not a full website crawl. Checks vary by Lighthouse version and applicability:
Page-Level SEO
Document title, meta description, indexing directives, HTTP status, descriptive link text, crawlable anchors, robots.txt validity, image alt text, hreflang and canonical markup when Lighthouse includes those audits. Structured data is a manual review, not an automatic validation.
Lab Performance & Optional Field Data
LCP, CLS, FCP, TBT and Speed Index from Lighthouse. Genuine lab TTFB is shown only if returned. Available CrUX observations, including INP, are presented separately from lab scores.
Mobile & Desktop
The same URL is tested under both Lighthouse device profiles. These are controlled lab tests, not measurements of every visitor's device.
What This Does Not Check
No sitemap inspection, broken-link crawl, site-wide indexability assessment, duplicate-page analysis, keyword ranking, Open Graph validation or comprehensive security-header audit.
Why Choose Our Free SEO Scanner?
Powered by Google Lighthouse
SnapSiteScan reports Google Lighthouse lab data from the PageSpeed Insights API — a controlled test on a simulated mobile and desktop device. When the same API response contains usable Chrome User Experience Report observations, they are shown separately as URL-level or origin-level field data, never included in the Website Health score.
One Deterministic First Fix
We group overlapping performance findings and use Lighthouse's estimated savings to prioritise a first action. No ranking improvement or score gain is guaranteed.
AI-Generated Code Fixes
Gemini explains scan results, and the existing code generator offers examples for supported performance findings. Review applicability and risk before deploying; SEO checks are not all automatic code fixes.
No Signup, No Paywall
No account or credit card is required. Fair-use limits: 2 scans per minute per IP (10 for bulk requests, 5 for AI requests). Shared request quotas and concurrent-request limits also apply across the service, independently of IP headers. Fresh scans do not bypass these limits. When capacity or protection is unavailable, new requests pause; existing reports remain readable.
Mobile + Desktop in Parallel
We test the same URL with both Lighthouse device profiles. These lab results are not measurements of every visitor.
How It Works (3 Steps)
Paste Your URL
Enter any public website address — yours, a competitor's, or a client's.
We Run Lighthouse
A single-page Lighthouse run tests mobile and desktop in parallel, typically in about 45 seconds. Only returned SEO checks are listed.
Get Ranked Fixes
Review automatic, manual and unavailable SEO checks. First Fix and Gemini code examples address supported performance findings; after an applicable change, Rescan & Compare fresh measurements.
Free SEO Scanner FAQ
Is this SEO scanner really free?+
Yes — free, no signup, no credit card or email required. Fair-use limits: 2 scans per minute per IP (10 for bulk requests, 5 for AI requests). Shared request quotas and concurrent-request limits also apply across the service, independently of IP headers. Fresh scans do not bypass these limits. When capacity or protection is unavailable, new requests pause; existing reports remain readable.
What does the free SEO scanner check?+
Single-page Lighthouse SEO audit, not a full website crawl. Document title, meta description, indexing directives, HTTP status, descriptive link text, crawlable anchors, robots.txt validity, image alt text, hreflang and canonical markup when Lighthouse includes those audits. Structured data is a manual review, not an automatic validation. No sitemap inspection, broken-link crawl, site-wide indexability assessment, duplicate-page analysis, keyword ranking, Open Graph validation or comprehensive security-header audit.
How is this different from Google PageSpeed Insights?+
SnapSiteScan uses Lighthouse data supplied by PageSpeed Insights. First Fix groups overlapping performance evidence and selects an eligible first action deterministically. Gemini explains results and supplies code examples for supported performance findings; not every SEO check has a code fix. Rescan & Compare checks fresh lab measurements after a change, without promising score or ranking gains.
Can I scan any website?+
Yes — any public URL. You don't need to own the site or install anything. Useful for auditing competitors, client sites, or your own pages before launch.
How fast is the scan?+
A scan typically takes about 45 seconds; complex pages may take longer or time out. Mobile and desktop run in parallel. Results are cached for 12 hours. Force Fresh Scan bypasses the cache, not request limits; Rescan & Compare retains the earlier report.
Do you store my scan data?+
Only briefly, and not linked to you. Results are cached on our server by URL for 12 hours so repeat scans load quickly, then expire. Your browser keeps a local history of up to 20 of your reports, which never leaves your device and can be cleared at any time. Share links carry the report inside the link itself and are not saved on our server. There are no user accounts.