About this tool
Test crawl directives before release so important pages stay accessible and non-indexable areas stay blocked intentionally.
Robots.txt Tester lets you paste a robots.txt file and test specific URLs against its rules to see whether each path would be allowed or blocked for a given user-agent. It parses wildcard patterns, respects user-agent specificity, and evaluates rules exactly as a compliant crawler would interpret them.
- Parses robots.txt content and evaluates allow or disallow rules for a selected user-agent and path.
- Lists detected sitemap directives and simple syntax warnings.
- Shows which rule won the match so debugging crawl behavior is easier.
How to use Robots.txt Tester
Paste your robots.txt contents, enter one or more test URLs, and select the user-agent to simulate. The tool evaluates each URL against the applicable rules and shows the matching directive, so you can confirm that important pages are crawlable and sensitive paths are properly blocked.
When this tool is useful
- Test whether important templates or folders are blocked before deploying robots.txt changes.
- Check specific user-agents like Googlebot against directories or parameter patterns.
- Audit client robots files quickly without opening a separate crawler or desktop SEO suite.
Practical tips
- Test both wildcard and bot-specific groups because the specific group can override your assumption.
- Do not rely on robots.txt to deindex pages already known to search engines. Use noindex or remove access.
- Keep sitemap lines valid and up to date so discovery and crawl directives stay aligned.
Examples you can test
These examples show the kind of real input and reviewed output this tool is designed to support. Use them as a starting point before pasting your own production content, then compare the output with the destination system that will use the result. The goal is not only to produce a value, but to make the input assumptions, output format, and review step clear enough that the result can be trusted in a real workflow.
Test whether a path is blocked
Example input
Rule: Disallow: /admin, path: /admin/settings
Expected output
Blocked for the selected user agent
Testing paths before deployment helps prevent accidental crawl blocking.
Check a public URL
Example input
Rule: Disallow: /private, path: /blog/post
Expected output
Allowed for the selected user agent
Use representative paths from the real site when testing crawl rules.
Validation checklist
Run through these checks before copying the result into a CMS, codebase, spreadsheet, campaign, support ticket, or production document. Small formatting differences, unit assumptions, hidden whitespace, and platform-specific rules are common sources of mistakes in quick browser tools, so the final review should happen in the same context where the output will be used.
- Test rules with the same user agent that matters for your crawl scenario.
- Remember that robots.txt is not access control.
- Check the deployed robots.txt file after changing rules.
Why people use this tool
An overly broad disallow rule can accidentally block critical pages from search engine indexing, while a missing rule can expose staging environments or admin paths to crawlers. Testing rules before deployment catches these problems in a safe environment instead of discovering them through lost traffic or exposed content.
Related search intents
robots txt tester, robots.txt checker, robots.txt validator, crawl rule tester.