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Robots.txt Generator

Build compliant robots.txt files and validate custom crawler access rules instantly.

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Build compliant robots.txt crawler instruction files and test custom access rules in real time. Optimize crawling access for search bots and block scraping crawlers locally in your browser.

Learn About This Tool

Understanding robots.txt user agents and crawl rules

A robots.txt file is a plain text file placed in your website root directory to instruct search engine scrapers (like Googlebot, Bingbot, Yandex) on how to index and crawl your site pages. It uses directives like User-agent, Disallow, Allow, and Sitemap:
# Standard robots.txt syntax:
User-agent: *
Disallow: /admin/
Allow: /admin/login

Sitemap: https://example.com/sitemap.xml
If you are converting file formats to structured markup, you might also like our CSV to JSON Converter.
  • User-agent defines which specific spider bot the following crawl rules apply to
  • Disallow instructs crawler spiders to ignore matching path directories
  • Allow overrides disallow patterns, letting search crawlers index sub-directories
  • Sitemap defines the absolute XML sitemap URL address so search bots find pages easily

Blocking AI scrapers (ChatGPT, GPTBot, ClaudeBot)

AI crawlers and content scrapers actively download data files to train models. If you want to protect your site copy from scraping, you should configure specific Disallow blocks targeting GPTBot and ClaudeBot. Our tool includes built-in toggle controls to block AI user-agents instantly. If you need to analyze page tags or text density, check out our SEO Content Analyzer.
  • Explicitly defines disallow directives targeting GPTBot and ClaudeBot
  • Prevents large-scale automated data scraping from using your resources
  • Ensures search engine bots (like Googlebot) remain allowed to index public pages
  • Protects copyrighted material and paywalled assets from models training

Testing robots.txt path parameters client-side

It is easy to misconfigure paths, blocking Googlebot from indexing core directories. Our tool includes an **Interactive Rule Tester** that simulates how a crawler reads your rules in real-time. Input any URL path (like /admin/settings) to see which rule matches and whether access is blocked. To format JSON schema configurations, use our JSON Formatter & Validator.
  • Simulates real-world crawler matching logic completely in the browser
  • Sorts rule matching precedence based on path character specificity
  • Flags syntax mismatches and provides details on why a rule wins
  • Zero server uploads protect internal directory names and settings

How to Use Robots.txt Generator

1

Configure agent access rules

Toggles status switches to Allow, Block, or Inherit crawl rules for standard search and AI crawlers.

2

Define custom allowed/blocked paths

Add custom directory paths (like /private/ or /cgi-bin/) and select whether crawlers can traverse them.

3

Simulate and copy robots.txt code

Input test paths in the rule simulator to verify crawler visibility, then copy the compiled code block.

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Common questions

What is a robots.txt file?

A robots.txt file is a text configuration placed in the root directory of a web server to tell search engines which pages they are allowed to crawl. It belongs to the Robots Exclusion Protocol (REP).

Where should the robots.txt file be uploaded?

It must be uploaded to the root directory of your website domain, so it is accessible at https://yourdomain.com/robots.txt. Search engine crawlers only look for it in this specific folder location.

How do I block ChatGPT and AI scrapers?

Add explicit disallow blocks targeting their user-agent strings. For example: User-agent: GPTBot followed by Disallow: /. Our builder includes simple toggle controls to generate these blocks automatically.

Can robots.txt completely hide a page from Google search?

No. Robots.txt prevents search bots from crawling a page, but Google may still index the URL if it finds links to it from external websites. To hide pages completely, use a noindex meta tag on the page itself. Create meta tags easily using our Meta Tag Generator.

What is the difference between Allow and Disallow?

Disallow blocks crawlers from accessing a folder directory (e.g. /admin/), while Allow lets you open access to specific sub-folders inside a blocked parent directory (e.g. Allow: /admin/public-preview/).

Does this tool support wildcards like * and $?

Yes. Spiders support * to match any string of characters, and $ to match the end of a URL. The interactive rule validator supports these patterns when testing access rules.

Does this tool send my directory structure to any servers?

No. The entire generation and path simulation logic occurs locally in your browser memory using JavaScript, keeping your internal directories completely private.

What is the Crawl-delay directive?

Crawl-delay is a directive used to limit the speed at which search spiders crawl a website to prevent overloading the server. However, major search engines like Googlebot do not support Crawl-delay; they suggest managing crawl rate inside Google Search Console instead.

Why does Google still show a page I disallowed in robots.txt?

Disallowing a URL in robots.txt simply blocks Googlebot from downloading that page. If other sites link to that page, Google can still index the URL. To remove it completely, you must add the <meta name="robots" content="noindex"> tag.

Are there case-sensitivity rules for paths in robots.txt?

Yes. Directory paths and filenames in robots.txt are case-sensitive. For example, Disallow: /Admin will block access to the /Admin folder, but not /admin or /ADMIN.

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