Robots.txt Validator
Check if your robots.txt blocks the right bots and pages.
What does this robots.txt validator do?
It fetches the live robots.txt file at any domain and runs basic checks on it. You see whether it has a User agent line, a Sitemap directive, whether it accidentally blocks the entire site, and whether it stays under the file size limit Google enforces.
Why validate your robots.txt?
A bad robots.txt is one of the fastest ways to tank a site silently. A misplaced slash on a Disallow line can keep Google out for months. Running a quick check after every site change confirms the file still says what you intend.
How do you use this tool?
- Enter the domain you want to validate.
- Click Validate.
- Review the pass and fail summary, then read the live file content below to spot anything unusual.
When should you re check it?
Re check after every CMS upgrade, every theme change, every plugin install, and every site migration. WordPress especially can rewrite robots.txt automatically without you noticing.
Got more questions?
How do I fix a Disallow slash all rule?
What is the robots.txt size limit?
Why does my staging site appear in search?
Does the validator follow redirects?
Need a real human SEO expert?
These tools are great for daily checks. For full audits, link building, AEO and GEO strategy, or a monthly retainer, hire Umar Rajput direct.