Robots.txt Validator & Crawler Directives Test
Audit robots.txt syntax, verify search engine crawl directives, inspect blocked CSS/JS resources, and check AI bot access.
Overview & Why This Matters
The robots.txt file provides crawler instructions to web robots before they access your site. Misconfigured directives can unintentionally de-index entire sections of your website or block essential CSS and JavaScript files that Google needs to render and evaluate your pages.
Why Robots.txt Hygiene Protects Organic Rankings
Prevent Accidental Site De-indexation
A misplaced 'Disallow: /' directive tells search engines to remove your entire website from search results, destroying business traffic overnight.
Ensure Full CSS & JS Rendering
Googlebot renders pages like a modern browser. Blocking script or stylesheet folders prevents Google from evaluating mobile friendliness and Core Web Vitals.
Govern AI Search Engine Crawlers
Explicitly manage access for OpenAI (GPTBot), Anthropic (ClaudeBot), and Perplexity to control brand citations and data ingestion.
Production Robots.txt Best Practice
Deploy a clean, secure robots.txt file at your domain root with an explicit sitemap reference:
User-agent: *
Disallow: /admin/
Disallow: /api/
Disallow: /checkout/
Allow: /
# XML Sitemaps
Sitemap: https://example.com/sitemap.xml