Free online tool
Robots.txt Generator
Pick your policy and generate a robots.txt file ready to upload to your site root.
User-agent: * Allow: /
What is robots.txt?
robots.txt is a plain text file at the root of your website that tells search-engine crawlers which pages they may or may not visit. It's the first file most bots request when they land on your domain.
How to use the generator
Choose whether to allow everything, block everything, or specify custom disallow rules. Optionally add a Sitemap line so crawlers can discover your sitemap.xml. Save the result as robots.txt in the root of your website (so it's reachable at yoursite.com/robots.txt).
Important notes
Robots.txt is a suggestion, not a security control — well-behaved bots respect it, but malicious scrapers ignore it. Never rely on it to hide sensitive URLs; use authentication for that.
+Where do I put the file?
Upload it to your site root so it's served at yourdomain.com/robots.txt.
+Can I have multiple User-agent blocks?
Yes. This generator produces a single wildcard block; for per-crawler rules you can add more blocks by hand.
Why use the Robots.txt Generator on ToolNest?
The Robots.txt Generator is one of more than forty free browser-based utilities we maintain on ToolNest. Every tool on the site is engineered around the same three promises: it must be fast, it must protect your privacy, and it must be genuinely useful without hiding features behind an account, a paywall, or an email capture form. Whether you use the Robots.txt Generatoronce a month or several times a day, it should feel like a native part of your workflow — open the tab, get the result, move on.
Everything happens directly inside your web browser. When you type, paste, or upload something into the Robots.txt Generator, that data never leaves your device. There is no server round-trip, no logging, no analytics pixel watching your keystrokes, and no third-party API silently receiving a copy of your input. Closing the browser tab is the same as clearing your session. This is a deliberate design choice: too many free "online tools" quietly funnel user content through remote servers, and we do not think a utility as small as this one justifies that risk.
Speed is the other pillar. The Robots.txt Generator loads on a cold connection in well under a second and stays responsive on older phones, low-power laptops, and metered mobile networks. There are no heavy frameworks layered on top of the tool, no autoplay video ads, and no blocking third-party scripts. Search engines like Google reward pages that load quickly and stay interactive, but more importantly, so do human visitors who came here to get one specific job done.
If the Robots.txt Generator saves you time, the best thing you can do is bookmark this page and share it with a colleague or classmate who might need it. We also welcome direct feedback — bug reports, feature requests, and suggestions for entirely new tools all go to the same inbox and are read by a human. The best tools on ToolNest started life as a one-line reader email, and this page will keep improving as long as people keep telling us what they wish it did better.