Free checks
Six free tools for the mistakes we see most often. They run on PageClimber, which I also run, and they need no account.
- AI Bot Access Checker
Which AI crawlers your robots.txt lets in or shuts out: GPTBot, ClaudeBot, PerplexityBot, Google-Extended and more. Block the wrong one and AI engines stop citing you.
- HTTPS & Redirect Checker
All four versions of your domain (http and https, www and bare), every redirect hop, chains, loops, HSTS and mixed content.
- Schema Validator
What structured data a page declares, whether it parses, and which recommended fields are missing.
- Sitemap Inspector
Finds your sitemap, checks the XML, counts the URLs, and checks lastmod freshness and the robots.txt declaration.
- Meta & Social Preview
Your Google snippet and your Open Graph and Twitter share card, plus the tags that are missing.
- AI Agent Readiness
Structural signals that help or block AI agents: semantics, labeled controls, crawlability and CAPTCHA blockers. A heuristic check; it does not run a live agent.