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robots.txt generator

Generate a clean robots.txt with sitemap merge.

Build a valid robots.txt with Sitemap: directives. Optionally merge with your live robots.txt so existing User-agent rules stay intact.

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Enter your sitemap URLs and click Generate robots.txt to get started.

Why this generator

Built for the way SEO teams actually ship.

A correctly configured robots.txt with sitemap directives is the cheapest crawl-coverage win on the web. Plus it works for AI bots too.

Correct format

Generates robots.txt with proper Sitemap: directives, absolute URLs, and the right syntax for every crawler.

Merge with existing

Fetches your live robots.txt and merges new sitemap lines in without overwriting your existing User-agent rules.

Auto-deduplication

Removes duplicate sitemap directives automatically so your robots.txt stays clean as you regenerate it.

Multiple sitemaps

Add up to 20 sitemap URLs: product, blog, image, video, and sitemap indexes for large or multi-section sites.

One-click copy or download

Copy the generated robots.txt or download the file ready to deploy. No formatting fiddling required.

Instant and free

No signup, no configuration. Enter your sitemaps and download your robots.txt in seconds.

How it works

From sitemap list to robots.txt, in seconds.

No signup. No file editor wrangling. Just paste, generate, ship.

  1. 01

    Add your sitemap URLs.

    One or more sitemap XML URLs. Add your domain too if you want to merge with your existing robots.txt.

  2. 02

    We generate the file.

    Correctly formatted Sitemap: directives, merged into your existing rules without overwriting anything.

  3. 03

    Copy or download.

    Review the output, then copy it to your clipboard or download the robots.txt ready for deploy.

Other tools

More free tools

Tools we built so SaaS teams can audit technical SEO, AI visibility, and organic growth gaps without waiting on an agency.

Sitemap Analyzer

Break your sitemap down by directory, depth, and metadata quality.

Sitemap Validator

Score every sitemap referenced in your new robots.txt before deploying.

Sitemap Finder & Checker

Find every sitemap on a domain before generating the robots.txt.

Hire GrowthOS

Want GrowthOS to ship this work for you?

These tools surface the gaps. GrowthOS turns them into shipped SaaS growth assets inside your weekly playbook.

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FAQ

Frequently asked questions

Adding Sitemap: directives to robots.txt is one of the three official ways to submit your sitemap to search engines (alongside Google Search Console and direct pinging). Any crawler that reads your robots.txt (including GPTBot and ClaudeBot) will automatically discover all your sitemaps without requiring manual submission.

The directive must appear on its own line in robots.txt using the format: Sitemap: https://example.com/sitemap.xml. Use the full absolute URL with protocol. You can include as many Sitemap: lines as needed, one per sitemap or sitemap index file.

No. When you provide your domain, the tool fetches your live robots.txt and merges the new Sitemap: directives into it. Existing User-agent rules, Disallow/Allow directives, and Crawl-delay settings are preserved. Duplicate sitemap URLs are automatically deduplicated.

You can add up to 20 sitemap URLs per generation. This covers virtually all websites, including large sites with multiple category-specific sitemaps (products, blog, images, videos) organized under a sitemap index.

Yes. robots.txt is scoped to a single host: www.example.com and blog.example.com each need their own robots.txt at their respective roots. If you manage multiple subdomains, run this tool once per subdomain and customize the sitemap URLs accordingly.