Skip to main content
ToolNest AI
Free

Robots.txt Tester

Test robots.txt rules, validate syntax and check whether specific URLs are allowed or blocked for search engine crawlers.

robot_2

Test & Validate Robots.txt

robot_2

Enter a website URL, paste or upload robots.txt

Validates syntax, detects duplicate rules and tests whether specific URLs are allowed or blocked — using Google's longest-match path algorithm.

Syntax ValidationURL TestingGooglebotWildcard PatternsCrawl-delayScore 0–100

About Robots.txt Tester

Fetch any website's robots.txt, paste content directly or upload a file — then validate syntax and test specific URLs against crawl rules for Googlebot, Bingbot, DuckDuckBot, YandexBot and more. The tester parses every User-agent group, Allow/Disallow rule, Crawl-delay and Sitemap directive, then applies Google's longest-match path algorithm to determine whether a URL is allowed or blocked. An overall SEO Score (0–100) flags common issues like a blocked homepage, missing sitemap, blocked CSS or JavaScript and excessive crawl-delay. Export the full report as JSON, TXT or PDF.

Frequently Asked Questions

A robots.txt tester parses your robots.txt file and checks whether specific URLs are allowed or blocked for given crawlers. It applies the same longest-match rule algorithm used by Google Search Console to determine crawl access, and validates the file syntax against the Robots Exclusion Protocol.

Enter the URL in the URL tester field, select Googlebot as the user agent and click Test URL. The tester will show whether the URL is Allowed or Blocked, identify the exact matching rule and line number, and explain why.

Disallow tells a crawler not to access a specific path. For example, 'Disallow: /admin/' blocks all URLs starting with /admin/. An empty Disallow (Disallow: ) allows full access. Disallow and Allow rules are evaluated by specificity — the longest matching path wins.

Your page might be blocked by a Disallow rule that matches its path, a wildcard pattern like Disallow: /*.pdf$ that matches the URL structure, or a rule under User-agent: * that applies to all crawlers. Use the URL tester to identify the exact blocking rule and line number.

Yes, 100% free with no account required and no usage limits. Robots.txt fetching uses a server-side proxy; parsing and URL testing run instantly in your browser.

Related Tools

Robots.txt Generator

Generate a valid robots.txt file for your website with custom rules, sitemap support and search engine directives.

Sitemap Validator

Validate XML sitemaps, detect errors and ensure they are ready for Google Search Console.

Redirect Checker

Check HTTP redirects, redirect chains and final destination URLs to improve technical SEO.

Meta Tags Analyzer

Analyze any webpage's SEO meta tags, Open Graph tags, Twitter Cards and technical SEO elements instantly.