Developer Tools

Robots.txt Checker Guide

Learn when to use Robots.txt Checker, how to use it correctly, and how to avoid common mistakes.

What this guide covers

Use this Robots.txt Checker to fetch and inspect a website robots.txt file. It helps you confirm whether the file exists, review common directives like User-agent, Disallow, Allow, and Sitemap, and spot obvious crawl-control issues during SEO checks.

This guide explains when to use Robots.txt Checker, how to get a cleaner result, and which mistakes to avoid before moving on to related tools or the main tool page.

Why use Robots.txt Checker

Quickly confirm whether robots.txt exists on a site.
Useful for basic SEO audits and crawl debugging.
Helps spot blocked sections before indexing work.
Shows sitemap lines found inside robots.txt.
Fast browser-based check without opening DevTools.

How to use Robots.txt Checker

Paste a full URL or domain into the input box.
Run the tool to fetch the site robots.txt file.
Review status, file location, and detected directives.
Check Disallow, Allow, and Sitemap lines for issues.

Best use cases

Checking crawl rules before publishing SEO changes.
Confirming sitemap lines inside robots.txt.
Reviewing blocked paths during technical audits.
Spot-checking a client domain after migration.

Common mistakes

A page URL is pasted instead of the domain root.

Fix: Use the main site URL or domain. The tool will check /robots.txt on that origin.

The site blocks remote fetching or the request fails.

Fix: Retry with the full URL and compare the result manually in the browser if needed.

Users think robots.txt guarantees no indexing.

Fix: Remember robots.txt controls crawling, not always indexing behavior.

Use the tool

Ready to run Robots.txt Checker? Open the main tool page to enter your input, generate the result, and copy or download the output.

Open Robots.txt Checker