Robots.txt Generator

Generate a robots.txt file with custom rules.

Runs entirely in your browser. Your data is never uploaded.

About Robots.txt Generator

Robots.txt Generator builds a valid robots.txt with allow/disallow rules, user-agents and a sitemap reference to control how crawlers access your site.

Robots.txt Generator is one of dozens of free seo tools on Crystal Toolkit. When you open this page, the tool loads in your browser and is ready to use immediately — there is nothing to install and no account to create. Everything you enter is handled locally using fast, modern web technology, so the work happens on your device rather than on a remote server. This approach keeps your information private, removes upload and download waiting time, and lets the tool keep working even on a slow connection once the page has loaded.

How to use Robots.txt Generator

1Choose what to allow or block.
2Add your sitemap URL.
3Copy the robots.txt.

Key features

Generates clean, standards-compliant output you can copy
Previews exactly how your page will look in search and social
Helps you avoid truncation and common SEO mistakes
100% free with no sign-up, account or watermark
Mobile-first design that works on any device

Common use cases

Optimising titles, descriptions and meta tags
Auditing on-page content and keyword usage
Preparing sitemaps and robots files for launch

Why use Crystal Toolkit?

Unlike many online seo tools, Crystal Toolkit runs Robots.txt Generator entirely inside your browser. That means your data is processed on your own device and is never uploaded to a server, so it stays private and the results appear instantly. There is no sign-up, no daily limit and no watermark — just a fast, focused robots.txt generator you can use as often as you like, on desktop or mobile. Crystal Toolkit is built and maintained by CrystalSoftonic and is funded by unobtrusive ads, which is how we keep every tool completely free.