SEO Health Check
Check hreflang, sitemap, meta tags, JSON-LD and page structure in seconds. 31 technical SEO checks, 100% free.
Paste your site URL and discover technical SEO issues in seconds.
What we check:
What do we check in this audit?
SEO Health Check is a technical SEO checker for developers. In seconds, it analyzes your page across 5 critical dimensions.
Canonical & Hreflang
Checks canonical tag (absolute URL, same domain) and for multilingual sites, verifies hreflang tags with x-default and no duplicates.
Sitemap & Robots.txt
Confirms /robots.txt is accessible, references the sitemap, and does not block the site. Verifies /sitemap.xml exists and is valid XML.
Metadata & Open Graph
Checks title (<=60 chars), meta description (70-160 chars), exactly 1 H1, and Open Graph tags for social sharing.
Structured Data (JSON-LD)
Validates JSON-LD with schema.org @context, valid @type, and no JSON syntax errors. Structured data is essential for rich results.
Page Structure
Checks lang attribute on html, H2s, alt on all images, internal links (min. 3), sufficient content (>=300 chars), and HTTP 200.
Frequently Asked Questions
Does this tool affect my site?
No. SEO Health Check only makes normal GET requests, identical to those from a browser or Googlebot. It does not modify anything on your server.
Why do some checks appear as Skipped?
Checks marked as Skipped do not apply to your site. For example, hreflang checks are skipped if the site has no hreflang tags (normal for single-language sites).
What is the usage limit?
The tool is free with a limit of 3 audits per hour per IP and 20 audits per hour globally.
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