Every search engine visits your robots.txt before crawling a single page. This small file controls which parts of your site get indexed, how fast crawlers visit, and where your sitemap lives. A misconfigured robots.txt can accidentally block your entire site from Google.
What Is robots.txt Generator?
robots.txt is a plain text file at your site root that instructs web crawlers which URLs they can and cannot access. Our robots.txt Generator creates properly formatted files with common configurations for different site types.
How to Use robots.txt Generator on DevToolHub
- Open the robots.txt Generator tool on DevToolHub — no signup required.
- Paste or enter your input data in the left panel.
- See the result instantly in the output panel.
- Copy the result or download it as a file.
Common robots.txt Configurations
Presets for typical website needs:
# Allow everything (most sites)
User-agent: *
Allow: /
Sitemap: https://example.com/sitemap.xml
# Block admin and API routes
User-agent: *
Disallow: /admin/
Disallow: /api/
Disallow: /private/
Allow: /
Sitemap: https://example.com/sitemap.xml
# Block everything (staging/dev)
User-agent: *
Disallow: /
# Rate limit aggressive bots
User-agent: GPTBot
Disallow: /
User-agent: *
Crawl-delay: 1Pro Tips
- Always include a Sitemap directive — it helps search engines discover all your pages
- Disallow doesn't hide pages — it only asks crawlers not to crawl them (use noindex for removal from results)
- Test your robots.txt with Google Search Console's robots.txt Tester tool
- Block crawlers from accessing search result pages, session URLs, and print versions
When You Need This
- Setting up robots.txt for a new website launch
- Blocking AI training crawlers (GPTBot, CCBot) from your content
- Preventing search engines from indexing staging environments
- Configuring crawl rate for sites with limited server resources
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