Robots.txt Validator
Check pasted crawler directives and sitemap declarations locally.
Validate robots.txt syntax
The validator checks grouping, supported directive shapes, sitemap URLs and common mistakes. It does not simulate every crawler-specific interpretation.
Robots.txt is public guidance for crawlers and must not be used to protect confidential content.
How to use the Robots.txt Validator
- Paste the complete robots.txt file.
- Run validation and review directive, grouping and sitemap warnings.
- Correct the source file and test important URLs before publishing.
Practical example
Confirm that a broad disallow rule does not unintentionally cover public CSS, JavaScript or content paths.
What this tool cannot guarantee
Syntax validation cannot reproduce every crawler interpretation or confirm whether listed URLs are indexable.
Continue this workflow with the Robots.txt Generator
Read the Robots.txt and XML Sitemaps Guide for implementation guidance and common limitations.
Frequently asked questions
Is the Robots.txt Validator free to use?
Yes. It is available without an account or paid subscription.
Is my input uploaded or stored?
The tool works from the values you provide and does not connect to or modify your live website.
Should I review the result before using it?
Yes. Check the output for your project and test it in the intended environment before production use.