Tool Collection

Is your site okay as it is right now?

Check search visibility, security, and ad-review readiness for free, all from one URL.

All-in-One Check⭐NEW

Check 4 things at once from a single URL and see what's most urgent first.

Go β†’
SEO/GEO Checker

Check SEO+GEO+accessibility with a single URL

Go β†’
Security Header Checker

Check HTTP header & cookie security for free

Go β†’
AdSense Precheck

Check your ad-review readiness in advance

Go β†’
llms.txt Generator

Auto-generate an llms.txt for AI crawlers

Go β†’

What the Site Check Center is

Properly checking a site's search visibility, security settings, ad-review readiness, and AI crawler handling usually means hunting down and using several separate tools.

The Site Check Center brings together nexalab.app's 4 URL-based diagnostic tools (SEO/GEO Checker, Security Checker, AdSense Precheck, llms.txt Generator) plus the All-in-One Check that runs them together. All free, no signup, and nothing you enter is stored on our server.

Need to improve something after checking?

See Proposal & Quote Tools β†’