The Most Advanced Robots.txt Checker in the World
Fetches and parses your real robots.txt, simulates search engine and AI crawlers, and tells you whether a specific URL is allowed, blocked, or ambiguously handled, while analyzing the entire file as one system.
Uncover dangerous site-wide patterns, conflicting rules, crawler-specific behavior, and future-impact risks. Clear verdicts and deep data, not buried specs or guesswork.
Free account · No credit card · 30 seconds to start
User-agent: * Disallow: /admin/ Allow: /admin/public/ User-agent: GPTBot Disallow: / User-agent: Googlebot Allow: / Disallow: /private/ Sitemap: https://example.com/sitemap.xml
Sign in to run a real check
The full checker lives inside the app. Create a free account to fetch your live robots.txt and see verdicts for every crawler.
Open the checkerSix layers of analysis no other checker runs
Most tools read your file. Ours understands it, the way real crawlers do.
Per-URL Verdict Engine
Tells you exactly whether a specific URL is allowed, blocked, or ambiguously handled, for any crawler, in plain English.
Real Crawler Simulation
Simulates how Googlebot, Bingbot, GPTBot, ClaudeBot, PerplexityBot, and 30+ others actually parse your file, not generic guesswork.
Whole-File Analysis
Goes beyond single rules. Analyzes your entire robots.txt as one system, including precedence, group inheritance, and wildcard expansion.
Site-Wide Pattern Detection
Catches dangerous patterns like accidental Disallow: /, conflicting Allow/Disallow groups, and rules that silently kill entire sections.
Conflict & Specificity Resolver
Shows you which rule actually wins when directives compete, the part most checkers get wrong because they ignore longest-match logic.
Future-Impact Risk Score
Flags rules that look harmless today but will break SEO or AI visibility tomorrow, before search engines and LLMs notice.
From signup to verdict in under a minute
Sign in to the app
Create your free account in 30 seconds. No credit card. The checker lives inside the RobotsGuard workspace.
Enter your domain or paste robots.txt
We fetch the live file from your origin, parse it the way real crawlers do, and load it into the analyzer.
Get verdicts, not specs
See per-URL access for every major crawler, conflicts highlighted, and a risk score for what's likely to break.
RobotsGuard Checker vs. typical free testers
One wrong line in robots.txt can erase you from Google, and from ChatGPT.
A single misplaced Disallow: / has cost real businesses millions in lost traffic. And in the AI era, blocking GPTBot or ClaudeBot means disappearing from the answers users now ask AI instead of Google.
Most teams find out weeks too late. This checker is built so you find out in seconds.
Frequently asked
Run the most advanced robots.txt check ever built
Sign up free, paste your domain, and get crawler-by-crawler verdicts in seconds. Then let RobotsGuard watch it 24/7 so it never breaks again.
Free account · No credit card · Upgrade only if you want monitoring