Check robots.txt files for crawler directives and blocked paths with validation.
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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 Checker
A robots.txt file is easy to get subtly wrong in ways a text editor won't ever flag, a Disallow line under the wrong user-agent block, a rule that unintentionally blocks an entire section of a site, a Sitemap directive pointing at a URL that doesn't actually resolve, mistakes that only show up once a crawler starts behaving strangely. This tool validates a robots.txt file's actual structure, listing every user-agent block along with the paths it allows or blocks, and flagging a syntax problem before it quietly affects how a site gets crawled. Useful for reviewing a robots.txt file after an edit to confirm a whole section wasn't accidentally blocked, checking that a Sitemap directive actually points somewhere valid, or auditing an unfamiliar site's crawler rules to see exactly what's off-limits.
Check robots.txt files for crawler directives and blocked paths with validation. The Robots TXT Checker is one of 900+ free developer tools on Toolblip - all open to use without a signup.
How do I use the Robots TXT Checker?
Open the Robots TXT Checker 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 Checker free to use?
Yes. The Robots TXT Checker 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 Checker safe and private?
Yes. The Robots TXT Checker 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 Checker produce?
The Robots TXT Checker 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 Checker work on mobile devices?
Yes. The Robots TXT Checker 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 Checker help improve my site's SEO?
The Robots TXT Checker 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 Checker store the URLs or content I check?
No. The Robots TXT Checker 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 Checker offline?
Once the page has loaded, the Robots TXT Checker continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.