Simulate how search engine crawlers see your site based on robots.txt rules.
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Edit robots.txt content
Preview / Rules
ALLOW*/public/
DISALLOW*/admin/
DISALLOW*/private/
ALLOW*/api/public
DISALLOWGooglebot/private/
ALLOWGooglebot/
More about the Robots.txt Simulator
Checking whether one specific URL is blocked answers a narrow question, but it says nothing about the bigger picture, which pages across an entire site a crawler like Googlebot could actually reach by following links from the homepage outward, and which sections would end up walled off once every robots.txt rule is applied across the whole structure rather than just one path. This tool simulates a crawler walking through an entire site under the current robots.txt rules, mapping out which pages and sections are reachable and which are blocked overall. Useful for seeing the full picture of what a search engine could actually crawl across a site rather than checking one URL at a time, catching a rule that unintentionally walls off an entire section rather than the one page it was meant for, or reviewing a site's overall crawlability before a robots.txt change goes live.
Simulate how search engine crawlers see your site based on robots.txt rules. The Robots.txt Simulator is one of 900+ free developer tools on Toolblip - all open to use without a signup.
How do I use the Robots.txt Simulator?
Open the Robots.txt Simulator on this page, paste or upload your input, and the result updates as you type. Use the copy button to grab the output, or adjust options to tune the result. Nothing you enter leaves your browser.
Is the Robots.txt Simulator free to use?
Yes. The Robots.txt Simulator is a free online tool on Toolblip - no signup, no account, no hidden usage limits. It runs in your browser and works on desktop and mobile.
Is the Robots.txt Simulator safe and private?
Yes. The Robots.txt Simulator processes your data entirely client-side, so nothing you paste is uploaded or stored on any server. It's safe to use with internal snippets, private keys for debugging, or any other sensitive content you'd rather not send to a remote service.
What kind of output does the Robots.txt Simulator produce?
The Robots.txt Simulator produces clean, formatted output that you can copy or download with a single click. The output is tailored to the tool's purpose — formatted code, converted data, transformed text, or processed media — and is ready for immediate use in your project or workflow.
Does the Robots.txt Simulator work on mobile devices?
Yes. The Robots.txt Simulator is designed to work on any device with a modern browser, including phones and tablets. The interface adapts to smaller screens, and the core functionality — paste input, transform, copy output — works the same way regardless of your device.
Will the Robots.txt Simulator help improve my site's SEO?
The Robots.txt Simulator is one part of a healthy SEO workflow. It produces the output search engines expect - clean syntax, valid structure, and the metadata they use to index pages - but real ranking gains come from pairing good tooling with useful content.
Does the Robots.txt Simulator store the URLs or content I check?
No. The Robots.txt Simulator processes everything in your browser. No URLs, meta tags, or page content is logged or sent to any server. You can audit competitor sites or sensitive internal pages without leaving a trail on an external platform.
Can I use the Robots.txt Simulator offline?
Once the page has loaded, the Robots.txt Simulator continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.