Robots.txt Builder & Path Tester Sandbox
AI Crawler BlocklistGenerate and test RFC 9309 compliant robots.txt directives directly in your browser. Configure search bot permissions, block aggressive AI scrapers with one click, simulate URL crawl paths, and specify XML sitemaps with 100% client-side privacy.
Robots.txt Builder & Path Tester Sandbox
Build standard robots.txt files with AI scraper blocklists and test URL path permissions in real-time.
Interactive Robots.txt Builder & Path Tester Sandbox Workspace
Build and validate robots.txt crawl control files. Features presets to block AI scrapers (GPTBot, ClaudeBot, PerplexityBot, CCBot), custom Disallow/Allow directives, Crawl-Delay, and an integrated Path Tester to verify if specific URLs are ALLOWED or BLOCKED.
How This Tool Works (100% Client-Side Engine)
The tool constructs RFC 9309 compliant robots.txt text blocks grouped by User-agent. The client-side path simulator evaluates sample URLs against declared Disallow and Allow directives using standard prefix and wildcard (*) matching logic, determining the winning directive based on specificity length.
Step-by-Step Guide
Configure Bot Directives & AI Blocklists
Set rules for all robots (*) or specific bots (Googlebot, Bingbot). Toggle the AI Scraper Blocklist to restrict AI scrapers.
Add Disallow / Allow Paths & Sitemap
Enter directory paths to protect and specify your canonical XML sitemap location.
Test Paths & Download robots.txt
Test sample URLs in the path validator to confirm bot access, then copy or download your robots.txt file.
Why Use This Tool: Privacy & Performance
The robots.txt file is the foundational gateway controlling how search engine spiders, social media indexers, and autonomous AI crawlers discover your website. A single syntax mistake—such as an accidental Disallow: / rule or malformed wildcard pattern—can catastrophically de-index your entire domain from Google overnight. Furthermore, modern website operators need granular control over aggressive AI training bots (like GPTBot, ClaudeBot, and CCBot) that harvest intellectual property without driving search referral traffic. ToolByte Robots.txt Builder lets you build clean, standards-compliant directives with dedicated one-click AI blocklists. It includes a built-in path tester that evaluates test URLs against your custom ruleset locally in memory, letting you verify indexation logic before deploying to production.
Common Use Cases & Workflows
Blocking Autonomous AI Training Scrapers
Block AI crawlers like GPTBot, CCBot, Anthropic-ai, and Bytespider from scraping proprietary content while allowing Googlebot.
Protecting Staging & Admin Directories
Disallow search crawlers from accessing private backend paths (/admin/, /cart/, /api/, /checkout/) to save crawl budget.
Testing Wildcard Crawl Path Matching
Simulate whether complex path rules like Disallow: /*.pdf$ properly block file extensions without impacting other pages.
Declaring Multi-Sitemap Locations
Add canonical XML sitemap and sitemap index URLs to guide search engines directly to your newest content pages.
Technical Limitations & Operational Boundaries
Frequently Asked Questions
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