Free online robots.txt tester and validator. Test your robots.txt rules against specific URLs with user-agent simulation for Googlebot, Bingbot, and Googlebot-Image. Includes template presets and crawl rule analysis with Allow/Disallow matching. 100% browser-based.
100% browser-based — your data never leaves your device
Validate and test your robots.txt rules against specific URLs.
Copy your robots.txt content and paste it into the input area above.
Enter a specific URL from your site to check if it's allowed or disallowed by the rules.
Select which crawler to simulate (Googlebot, Bingbot, etc.) to test different sets of rules.
The tool tells you whether the URL is allowed, disallowed, or if the rule set has errors.
Drop a file here or click to browse
Ctrl+Enter to test
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Robots.txt Tester is a free online seo tool that validate and test your robots.txt rules against specific urls. It works entirely in your browser — no downloads, no installations, and no server uploads required. digital marketers, content strategists, web developers use Robots.txt Tester when they need a fast, privacy-respecting way to process seo data without installing additional software. It supports capabilities such as rule validation, url testing, sitemap extraction. Additional features include user-agent simulation. Common use cases include validate robots.txt rules before deploying to production, test if specific urls are blocked for googlebot or bingbot, debug crawl budget issues by analyzing disallowed paths. All processing happens locally using modern browser APIs, which means your data never leaves your device. This makes Robots.txt Tester ideal for working with sensitive data, proprietary code, or any situation where privacy matters.
Robots.txt Tester is a free online seo tool that helps you validate and test your robots.txt rules against specific urls. Key capabilities include rule validation, url testing, sitemap extraction. All processing is done locally in your browser — no data is uploaded, stored, or shared with any server. There are no sign-ups, no file size limits, and no hidden charges. It is commonly used to validate robots.txt rules before deploying to production.
Copy your robots.txt content and paste it into the input area above.
Enter a specific URL from your site to check if it's allowed or disallowed by the rules.
Select which crawler to simulate (Googlebot, Bingbot, etc.) to test different sets of rules.
The tool tells you whether the URL is allowed, disallowed, or if the rule set has errors.
| Category | Details |
|---|---|
| Input Limits | Maximum page size: Browser memory bound |
| URL limit: Unlimited | |
| Supported Formats | HTML, XML (sitemaps), Plain text, URLs |
| Browser Engine |
|
All operations run entirely in your browser using built-in SEO APIs. No server uploads, no data storage, and no third-party requests.
Robots.txt Tester is ideal when you need to validate robots.txt rules before deploying to production without installing software or uploading data to a server. Since everything runs in your browser, there is no setup time and no risk of your data being stored on external servers. For for monitoring live search performance, consider using Google Search Console. For for comprehensive technical SEO crawls, Screaming Frog may be a better fit. Robots.txt Tester fills the gap between heavyweight desktop tools and insecure online services that require uploading your data.
No. Robots.txt Tester processes everything entirely in your browser using JavaScript. Nothing you type, paste, or upload is ever transmitted to any server. Your data never leaves your device.
Entirely in your browser. No data is sent to any server.
Add 'User-agent: Googlebot' followed by 'Disallow: /page-path'. You can test the rule immediately by entering the URL and selecting Googlebot as the user-agent.
Parse and validate your robots.txt for syntax errors and conflicts.
Test whether specific URLs are allowed or disallowed by your rules.
Extract and validate sitemap URLs declared in robots.txt.
Simulate different crawlers (Googlebot, Bingbot, etc.).
Robots.txt Tester is useful in a variety of scenarios across different workflows:
Validate robots.txt rules before deploying to production
Test if specific URLs are blocked for Googlebot or Bingbot
Debug crawl budget issues by analyzing disallowed paths
When you disallow a directory but need to allow a specific file or subdirectory, use the Allow directive to override a Disallow rule for Googlebot.
Add your sitemap URL at the end of robots.txt so crawlers can quickly discover all your important pages.
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