Robots.txt Tester
Validate syntax errors, find rule conflicts, and test URL path accessibility against Googlebot, Bingbot, and other custom crawlers dynamically client-side.
Workspace Settings & Inputs
Live Rule Matching Simulator
Verify path accessibility and priority resolutions under the REP rules.
Explicitly blocked by rule 'DISALLOW: /wp-admin/ (line 3)'.
Explicitly allowed by rule 'ALLOW: /wp-admin/admin-ajax.php (line 7)'. Overrides parent disallow block due to longer specificity.
No rules in the matching user-agent block '*' match path. Access allowed by default.
robots.txt Health Score
100%Interactive Visualizations
Directives Count by Crawler Block
Distribution of File Elements
Export Report & File
What is the Robots Txt Tester?
Overview and core technical concepts
The Robots Txt Tester is a professional, client-side utility designed to streamline robots txt tester tasks with instant processing, privacy guarantees, and customizable options.
Why Use the Robots Txt Tester?
Key advantages, developer speedups, and security benefits
Speed & Reliability
Execute calculations and transformations instantly in your local browser memory.
Enterprise Data Privacy
Your data stays on your local device, meeting strict data compliance requirements.
When to Consider Alternatives?
Anti-patterns, limitations, and when to choose an alternative approach
This tool is optimized for modern web browsers supporting Web Cryptography & WebAssembly standards.
Robots Txt Tester Example
Sample inputs, expected outputs, and code patterns
Sample Usage Output
Generated result using Robots Txt Tester parameters.Common Robots Txt Tester Mistakes
Frequent errors, security risks, and how to fix them
Frequently Asked Questions
A Robots.txt Tester is a simulator that parses your site's robots.txt rules and checks them against specific user-agents (like Googlebot) and URL paths. It confirms whether the paths are allowed or blocked by your directives and highlights why, mapping rules to their exact line numbers.
According to the Robots Exclusion Protocol (REP), search engines find the block with the most specific match to their user-agent token. Inside that block, they match paths. The rule with the longest path pattern length wins. If an Allow and Disallow rule both match with the exact same length, the Allow directive wins.
No. Googlebot ignores Crawl-delay rules completely. To control Google's crawl rate, use settings inside Google Search Console. However, Bingbot, YandexBot, and Baiduspider respect Crawl-delay and will slow down requests accordingly.
No. The ToolZeno Robots.txt Tester runs entirely in your local browser sandbox using client-side JavaScript. No file uploads, URLs, or pasted code lines are transmitted or logged on any server, ensuring total privacy and data confidentiality.
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