Robots.txt Validator
Make sure your robots.txt isn't accidentally blocking Google from crawling your site — the #1 cause of zero organic traffic after launch.
Join 2,000+ developers who check before they ship
How It Works
Three steps. Zero setup. Instant results.
Enter your URL
Paste any page URL into the tool. No signup or account needed.
See what's broken
Get a clear list of issues ranked by severity, with plain-English explanations.
Fix and ship
Sign up free to unlock fix guidance for every issue, then re-scan and deploy with confidence.
What This Tool Checks
Your robots.txt file is the first thing search engines read when they visit your site. A single syntax error or an overly broad Disallow rule can block Google from crawling your entire site — and you won't know until your traffic drops to zero. This tool validates your robots.txt for syntax errors, missing directives, and accidental blocks.
Frequently Asked Questions
Stop guessing. Scan everything in one click.
Check meta tags, robots.txt, Open Graph, sitemaps, headings, and 55+ more issues — free.
Run Full Audit with LintPageOther Free SEO Tools
Check another aspect of your site's SEO health.
Meta Tag Checker
Check your page title, meta description, viewport, charset, and robots tags.
Try it →Open Graph Tag Preview
Check your Open Graph and Twitter Card tags for social media sharing.
Try it →Sitemap Validator
Validate your sitemap.xml file format and URL count.
Try it →Heading Structure Checker
Analyze your H1-H6 heading hierarchy for SEO best practices.
Try it →