Robots.txt Validator

A robots.txt file is placed in the root directory of a website to guide web crawlers (like Googlebot) on which files and directories they can access. Spacing issues, typos, or incorrect wildcard usage in your directives can block search engines from indexing crucial pages. A robots.txt validator parses these directives locally and runs path queries against simulated user-agents to verify access control.

Always place your robots.txt file in the absolute root directory of your host (e.g., https://example.com/robots.txt). Remember that rules are case-sensitive and search engine crawlers interpret directives differently. For example, Googlebot recognizes standard wildcards (* and $), but older user-agents might ignore them. Verify your disallow configurations before publishing to avoid accidental search index drops.