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Robots.txt Generator

Build compliant robots.txt files for search engine crawlers online. Customize User-agent rules, disallow paths, and sitemap directives easily today.

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Generate compliant robots.txt crawler instruction files, block AI scrapers (GPTBot, ClaudeBot, Bytespider), and test path rules in real time. Optimize search engine crawl budgets and secure private site directories client-side.

Learn About This Tool

Understanding robots.txt Syntax & Search Crawler Specifications

A robots.txt file is a plain text configuration file placed in the root directory of a web server to instruct search engine crawlers (Googlebot, Bingbot, YandexBot) which paths they may crawl. It operates under the Robots Exclusion Protocol (REP) using standard directives: User-agent, Disallow, Allow, and Sitemap.
# Standard robots.txt File Format:
User-agent: *
Disallow: /admin/
Disallow: /api/
Allow: /api/public

Sitemap: https://example.com/sitemap.xml
  • `User-agent`: Defines the specific spider or crawler bot targeted by rule blocks
  • `Disallow`: Prevents matching crawler bots from scanning specified directory paths
  • `Allow`: Overrides Disallow rules to grant access to specific sub-directories or files
  • `Sitemap`: Declares the absolute XML sitemap URL address for efficient indexing

Blocking AI Training Bots & Web Scrapers (GPTBot, ClaudeBot, Bytespider)

LLM training scrapers like `GPTBot`, `ClaudeBot`, `Bytespider`, and `CCBot` systematically crawl public websites to collect training data. To prevent unauthorized content scraping while keeping search engine bots enabled, your `robots.txt` file must specify explicit Disallow blocks targeting AI user-agent strings. To analyze your site's on-page SEO meta tags, try our Meta Tag Generator.
  • Explicitly targets GPTBot, ClaudeBot, Bytespider, PerplexityBot, and CCBot
  • Blocks automated AI training scraping without impacting Googlebot ranking
  • Reduces server bandwidth consumption caused by aggressive LLM scrapers
  • Protects copyrighted articles, documentation, and proprietary code assets

Interactive Path Simulator & Crawler Match Testing

Configuring incorrect robots.txt path patterns can accidentally block Googlebot from indexing your primary site pages. This tool includes an interactive Path Tester that simulates how Googlebot evaluates your rules. Input any URL path (such as `/blog/my-article` or `/admin/dashboard`) to verify access permissions instantly.
  • Simulates real-world Googlebot pattern matching logic locally in your browser
  • Evaluates path precedence rules based on length and specificity
  • Highlights exact line rules responsible for allowing or blocking paths
  • Catches syntax errors and missing slashes before deployment

Crawl Budget Optimization for Large Web Applications

Search engines allocate a finite 'crawl budget' to each domain. Wasteful crawling of infinite pagination loops, internal search result URLs, or temporary session parameters degrades indexing speed for primary content pages. Disallowing low-value query parameters in robots.txt preserves crawl budget for high-priority pages.
  • Prevents duplicate indexation of internal search result URLs (`Disallow: /search`)
  • Blocks crawl waste on parameter combinations (`Disallow: /*?sort=`)
  • Accelerates discovery of new content by focusing crawler bots on XML sitemaps
  • Generates downloadable, valid `robots.txt` files with one click

How to Use Robots.txt Generator

1

Configure Standard Crawler Access

Set crawl rules for general search bots (`User-agent: *`) and toggle AI Scrapers blocking rules.

2

Add Custom Path Directives

Input paths to block (e.g., `/admin/`, `/private/`, `/api/`) or allow (e.g., `/api/public/`), and provide your XML Sitemap URL.

3

Simulate & Export File

Use the built-in Path Tester to verify crawler access, then copy or download the generated `robots.txt` file for your root server folder.

Common questions

What is a robots.txt file?

A robots.txt file is a plain text file hosted in the root directory of a domain (`https://example.com/robots.txt`) that instructs web crawlers which URLs they may scan.

Where should the robots.txt file be uploaded?

It must be uploaded to the root folder of your web server so it resolves at `https://yourdomain.com/robots.txt`. Search engine crawlers look specifically at this address.

How do I block AI scrapers like GPTBot and ClaudeBot?

Add explicit user-agent blocks targeting `GPTBot`, `ClaudeBot`, `CCBot`, and `Bytespider` with `Disallow: /`. Our generator provides quick toggle switches to insert these rules automatically.

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

No. Robots.txt prevents Googlebot from crawling the page content, but Google may still index the URL if it finds external links pointing to it. To prevent indexing entirely, use a `<meta name="robots" content="noindex">` tag.

What is the difference between Allow and Disallow?

`Disallow` instructs bots not to crawl a folder (e.g. `/admin/`), while `Allow` overrides a parent Disallow rule for a specific sub-path (e.g. `Allow: /admin/public/`).

Does robots.txt support wildcards like * and $?

Yes. The `*` wildcard matches any sequence of characters, and `$` matches the end of a URL string (e.g., `Disallow: /*.pdf$` blocks all PDF files).

Are directory paths case-sensitive in robots.txt?

Yes. Paths are case-sensitive. `Disallow: /Admin/` will block `/Admin/` but will not block `/admin/`.

What is the Sitemap directive?

The `Sitemap:` directive provides search crawlers with the absolute URL to your XML sitemap (e.g., `Sitemap: https://example.com/sitemap.xml`), speeding up page discovery.

What is the Crawl-delay directive?

Crawl-delay requests that bots wait a specified number of seconds between page requests. Googlebot ignores Crawl-delay, recommending crawl rate management in Google Search Console instead.

Is my directory structure kept private while using this tool?

Yes. All generator logic and path simulation run 100% locally in your browser memory.

How do I test if my robots.txt file works?

Use our built-in Path Tester to simulate URL matching locally, or submit your URL to Google Search Console's Robots Testing Tool.

Can I block crawling of specific query parameters?

Yes. Using rules like `Disallow: /*?*` blocks crawlers from indexing URLs containing query strings.

What happens if a robots.txt file returns a 404 error?

If a website has no robots.txt file (404 Not Found), search crawlers assume all public pages are allowed to be crawled.

Are there keyboard shortcuts?

Press `Ctrl+L` (or `Cmd+L` on Mac) to reset the configuration fields instantly.

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Deep Dives & Guides

Master this tool with our expert tutorials and best practices.

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