What robots.txt controls
The robots.txt file tells search engine crawlers which parts of your site they may or may not access. It doesn’t guarantee pages stay out of search results, but it’s the standard way to guide well-behaved crawlers.
Robots.txt Generator
Set the user-agent and allow/disallow paths to generate a ready-to-use robots.txt file.
How it works
- 1
Fill in the form fields the tool shows.
- 2
Change modes or toggles if available.
- 3
Copy the generated output when it looks right (often updates live).
Why use this tool
- Runs entirely in your browser — nothing is uploaded to a server.
- 100% free, no sign-up, no limits.
- Works in any modern browser — no app install, no extension, no account.
How to use Robots.txt Generator
Complete the fields in Robots.txt Generator. Output is produced in your browser from those inputs — copy it when ready.
Tips for better results
Empty optional fields if you want a minimal result. Invalid combinations should surface an error message.
Privacy and offline-friendly processing
Whenever possible, Robots.txt Generator processes your data locally with JavaScript in this page. That means drafts, secrets, and unfinished work stay on your device by default. Prefer this workflow when you do not want to upload sensitive text, tokens, passwords, or files to a third-party service.
Frequently asked questions
Does robots.txt block pages from appearing in search results?
Not reliably — use a noindex meta tag for that. Robots.txt only controls crawling, not indexing.
Where should I put the robots.txt file?
It must be placed at the root of your domain, e.g. https://example.com/robots.txt, to be recognized by crawlers.
Is my data uploaded when I use this tool?
For most FlyUtils tools, no. Processing happens in your browser with JavaScript. If a tool ever needs a server, that will be stated clearly on the page.
Is Robots.txt Generator free to use?
Yes. Robots.txt Generator is free, with no sign-up and no artificial usage caps for normal personal and work use.
Does Robots.txt Generator work on mobile?
Yes. The page is mobile-first, so you can paste input, tweak options, and copy results from a phone or tablet.