A robots.txt file tells crawlers where they can and cannot go. This robots txt generator builds one for you: pick your rules, add your sitemap, and copy a valid file, free. There is no syntax to memorize and nothing to install.
Configure, copy, upload.
Choose whether to allow all crawlers, block the AI ones, and which folders to keep private, then copy the output. You can create robots txt online in about a minute, and the result is ready to upload. People reach it as create robots txt, create robots txt file, or a robots txt generator online, and the steps never change.
The value of a robots txt generator is that it writes correct syntax for you. A single misplaced slash or a typo in a directive can block your whole site from search, so letting the tool build the file removes an easy and costly mistake.
Block exactly what you want.
Every site is different, so the tool lets you add your own disallow paths, one per line, to build a custom robots txt. Keep admin, API, staging, or cart pages out of search while leaving the rest open. That control is what makes it a custom robots txt generator and a flexible robot txt file generator rather than a fixed template.
One specific location.
It is a free robots txt generator with no account. Once this robot generator hands you the file, upload it to the root of your domain so it sits at yoursite.com/robots.txt. That exact path is the only place crawlers check, so a robots.txt in a subfolder is ignored. After it is live, test it to confirm the rules read the way you intended.
The one-paragraph version before you build one.
So what is robots txt? It's a plain text file that sits at the root of your domain and tells crawlers which paths they're allowed to request. There's no magic to it: a User-agent line names the bot, and Allow or Disallow lines list paths. Well-behaved crawlers like Googlebot read it on each visit and honor what they find.
If you're still asking what is a robots txt file in practice, picture a short note pinned to your front door for visiting robots. It doesn't lock anything, so it isn't security, and a Disallow won't remove a page already in Google's index. What it does is steer crawl budget toward the pages you care about and away from admin folders, search results, and staging paths. Build the rules with the form above, then upload the file so it answers at yoursite.com/robots.txt.
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The tool is one click away. No sign up, no upload, no payment.
Open Robots.txt Generator