What is an SEO site scan?
An SEO site scan is an automated crawl that checks your entire website — not just one page — against Google's ranking signals. It works the same way Googlebot does: following every internal link, reading each page's HTML, measuring load times, and flagging anything that violates best practices.
The output is a site-wide score and a prioritised issue list covering every page crawled. Issues that only show up across multiple pages — like duplicate title tags, broken internal links, or redirect chains — are invisible to single-page scanners but caught immediately by a full site scan.
Free SEO site scan with SEO-Snap
SEO-Snap crawls up to 20 pages per scan across 251 checks — meta tags, speed, broken links, schema, mobile, SSL, and AI search visibility. Free, no signup required. Run your free SEO site scan →
What an SEO site scan checks
A thorough SEO site scan covers six categories. Issues in each category affect your ranking differently — here's what to expect in each:
Meta tags & on-page
- ✓Title tag length and uniqueness
- ✓Meta description presence and length
- ✓H1 tag count and content
- ✓Duplicate titles/descriptions across pages
Page speed
- ✓Largest Contentful Paint (LCP)
- ✓Cumulative Layout Shift (CLS)
- ✓Total Blocking Time (TBT)
- ✓Image compression and formats
Links & crawlability
- ✓Broken internal and external links
- ✓Redirect chains (301 → 301 → 200)
- ✓Orphaned pages with no internal links
- ✓Robots.txt blocking important pages
Schema & structured data
- ✓JSON-LD validation (FAQPage, Product, Article)
- ✓Missing required schema fields
- ✓Rich result eligibility
- ✓Microdata and RDFa errors
Mobile & accessibility
- ✓Viewport meta tag
- ✓Touch target sizing (min 44×44px)
- ✓Font size readability
- ✓Horizontal scroll issues
Security & technical
- ✓HTTPS / SSL certificate validity
- ✓HTTP → HTTPS redirect
- ✓Canonical tag presence
- ✓Sitemap accessibility
Single-page scan vs SEO site scan
Both are useful — but they catch different problems. Here's when to use each:
| Scenario | Use single-page scan | Use SEO site scan |
|---|---|---|
| Checking a new landing page | ✓ | |
| After a site redesign | ✓ | |
| Finding broken internal links | ✓ | |
| Checking a single blog post | ✓ | |
| Duplicate meta tags across pages | ✓ | |
| Auditing before a domain migration | ✓ | |
| Quick pre-publish check | ✓ | |
| Monthly health monitoring | ✓ |
How to run a free SEO site scan (step by step)
- 1
Open SEO-Snap
Go to seo-snap.com. No account needed for your first scan.
- 2
Enter your homepage URL
Paste your root domain (e.g. https://yoursite.com). The scanner will follow internal links and crawl up to 20 pages automatically.
- 3
Run the scan
Click "Run Audit." You'll see a live crawl progress bar as each page is checked. A full site scan typically completes in 2–4 minutes.
- 4
Review site-wide issues first
Look at issues flagged across multiple pages — duplicate titles, broken links, missing schema — these have the highest impact because they affect all your rankings at once.
- 5
Fix by priority, not by page
Address Critical issues across all pages before moving to Warnings. A missing meta description on 10 pages matters more than one minor issue on a single page.
- 6
Re-scan after fixes
Run the scan again to confirm issues are resolved. Google re-crawls most sites within 1–2 weeks — fixing issues before then means faster ranking improvements.
Most common issues found in a site scan
Duplicate title tags
HighMultiple pages with the same title — Google can't distinguish them, so both rank lower. Fix: make every title unique and keyword-specific.
Broken internal links (404s)
HighLinks to deleted or renamed pages. Wastes crawl budget and destroys backlink value flowing between pages. Fix: redirect or update each broken URL.
Redirect chains
MediumPage A → Page B → Page C instead of direct redirect. Each hop loses ~15% of link equity. Fix: point all redirects directly to the final URL.
Missing meta descriptions
HighGoogle writes its own snippet — usually worse than yours. Fix: write unique 120–160 char descriptions for every page.
Pages blocked in robots.txt
CriticalImportant pages accidentally blocked from Googlebot — often after CMS updates. Fix: review robots.txt and remove any Disallow rules covering live pages.
No sitemap or broken sitemap
MediumWithout a sitemap, Google may miss new or deep pages. Fix: generate sitemap.xml and submit it in Google Search Console.
Mixed content (HTTP assets on HTTPS page)
MediumImages or scripts loading over HTTP on an HTTPS page trigger browser security warnings. Fix: update all asset URLs to HTTPS.
What a good SEO site scan score looks like
Scores are calculated per-page and then averaged across your site. A new site typically scores 40–65 on first scan. Here's how to read your result:
Frequently asked questions
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