Free tools
quick checks that run part of a squirrelscan audit. the llms.txt validator, AI crawler checker, robots.txt generator and security headers checker run right here, no account needed. the other three start a cloud audit, which needs a free account.
Website audit tool
Run 300+ audit rules across your whole site and get the fixes, not just a score.
OpenRuns instantlyllms.txt validator
Check your /llms.txt against the llmstxt.org spec, live.
OpenRuns instantlyrobots.txt generator
Block AI training bots while keeping AI search and live fetches, from a curated crawler list.
OpenRuns instantlyAI crawler checker
See which AI crawlers your robots.txt and your firewall let in, grouped by what each bot is for.
OpenStarts an auditBroken link checker
Find dead internal and external links across every crawled page.
OpenStarts an auditCore Web Vitals checker
Find the likely causes of slow LCP, INP, and CLS on every page, with a fix for each.
OpenRuns instantlySecurity headers checker
Check a page's CSP, HSTS and other security headers instantly, with a fix for each gap.
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