SEO & Webmaster4 min read•October 8, 2026

How to Generate a robots.txt File and a Starter XML Sitemap for Any Domain

Learn how to turn a base URL and a list of blocked paths into a ready robots.txt plus a starter sitemap.xml, and what each generated line means.

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SmartToolPack SEO Team✓ Verified
Reviewed by the GreenCode SEO & Webmaster Editorial Desk
Last Updated: October 8, 2026
Disclaimer: Calculations and results provided by this tool are mathematical estimates for informational and educational purposes only. They do not constitute professional financial, tax, or legal advice.
Featured Utility Tool

Robots.txt & Sitemap Generator

Open Robots.txt & Sitemap Generator

Introduction

Search engine crawlers look for robots.txt at the root of a domain before fetching anything else, and a sitemap tells them which URLs matter. A malformed file can hide an entire site or expose admin paths that should stay private. The Robots.txt & Sitemap Generator builds both files from a base URL and a short list of disallowed paths, updating the output in the browser as fields change.

Step-by-Step Instructions

  1. Enter the site root in the Domain / Website Base URL field, including https:// (a trailing slash is removed automatically).
  2. List each folder or path to block in Disallowed Path Rules, one per line, such as /admin/ or /private/.
  3. Review the robots.txt preview, which always starts with User-agent: * and Allow: / followed by your Disallow lines and a Sitemap directive.
  4. Click Copy above robots.txt and save the text as robots.txt in the web root.
  5. Select the sitemap.xml preview text, copy it, save it as sitemap.xml in the web root, then add further url entries for the pages you want indexed.

Key Use Cases

  • New site launch: Produce a valid robots.txt in seconds so the crawl is not blocked by a missing or broken file.
  • Staging cleanup: Add /staging/ or /test/ to the disallow list before the site goes public.
  • Sitemap scaffold: Start from a correct urlset wrapper and append entries rather than typing the XML namespace by hand.

Frequently Asked Questions

What exactly does the generated robots.txt contain?

It always writes User-agent: * and Allow: /, then one Disallow line per non-empty line in the paths box (leading and trailing spaces are trimmed), and finally Sitemap: pointing to /sitemap.xml under the base URL. There is no option to target a specific bot or add crawl delay.

Does the sitemap include all my pages?

No. The tool does not crawl the site. The sitemap.xml preview contains a single url entry for the homepage with today's date as lastmod, changefreq daily and priority 1.0. Treat it as a template and add one url block per page.

Is my domain sent anywhere?

No. Both files are assembled from the form values in the browser as you type. Nothing is uploaded, and the copy action only uses the clipboard.