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robots.txt Validator
SEOFetch or paste a robots.txt file and validate the core crawler directives.
ttb run robots-txt-validator
Validation report
Found at least one User-agent directive.
Sitemap directive present.
Allow/Disallow path formatting looks consistent.
All non-comment lines use recognized robots.txt directives.
Quick rules checklist
- • Every crawler section should start with User-agent:.
- • Allow and Disallow values usually start with /.
- • Add a Sitemap: line to help crawlers find your XML sitemap.
- • Use comments with # when you need documentation inside the file.
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robots.txt Validator の使い方
Fetch a live robots.txt file from any site or paste your own content manually. The validator checks for core directives like User-agent, Allow, Disallow, and Sitemap, then highlights likely issues such as missing sections or malformed path values. It is perfect for SEO QA, launch checklists, and quick crawler-access reviews.
1
Fetch or paste robots.txt
Pull the file from a live website or paste the contents directly into the editor.
2
Review validation findings
Check which rules passed and which areas need attention.
3
Refine your directives
Adjust the file until the core crawler structure and path syntax look correct.
よくある質問
Is this a formal RFC validator?+
No. It is a practical SEO-focused validator that checks common robots.txt structure and best practices.
Can robots.txt block indexing completely?+
It can block crawling, but indexing behavior depends on search engine behavior and whether URLs are discovered elsewhere. Use robots.txt carefully.