The Robots.txt Sandbox: test before you break SEO
Edit your robots.txt in a safe, isolated environment. See instantly how every change affects Googlebot, GPTBot, ClaudeBot, and 30+ other crawlers, across all the URLs that matter to your business.
No more guessing. No more "deploy and hope." Test, diff, and ship robots.txt changes with the confidence of a real staging environment.
Free account · No credit card · 30 seconds to start
User-agent: * Disallow: /admin/ Disallow: /checkout/ Allow: /products/ User-agent: GPTBot Allow: / User-agent: ClaudeBot Allow: / Sitemap: https://example.com/sitemap.xml
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The full sandbox lives inside the app. Create a free account to start testing edits safely.
Open the sandboxSix things you can finally do safely
Everything you wish you could test before pushing robots.txt to production.
Edit Without Risk
Modify your robots.txt in a safe, isolated workspace. Nothing touches production until you decide to ship.
Instant What-If Simulation
Change a single Disallow line and see, in seconds, every URL that just became blocked or unblocked across all major crawlers.
Multi-Crawler Replay
Replay your edits against Googlebot, Bingbot, GPTBot, ClaudeBot, PerplexityBot and 30+ others, side by side.
Diff View
Compare your draft against the live file with a clean diff. Know exactly what changed and what it means before deploying.
Blast Radius Detection
Catches dangerous edits, like an accidental Disallow: / or breaking /products, before they reach Google.
Snapshot & Rollback
Every test is saved. Revert to any earlier version instantly. Your sandbox history doubles as a safety net.
From signup to safe edits in under a minute
Sign in to the app
Create your free account in 30 seconds. The sandbox lives inside the RobotsGuard workspace.
Load or paste robots.txt
Pull the live file from your domain or paste a draft. Edit safely. Production stays untouched.
Simulate, diff, then ship
Test edits across every crawler, review the diff, and only push when the verdict looks right.
Production is the worst place to test robots.txt.
A single character in the wrong place can deindex thousands of pages overnight. Most teams only find out when traffic collapses days later.
The sandbox lets you test the change before Google ever sees it.
Frequently asked
Stop deploying robots.txt blind
Sign up free and get a sandbox for every robots.txt change you'll ever make.