Robots.txt checker

Analyze and validate your robots.txt file for proper syntax and SEO compliance

Request Feature / Support

8,396+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how Robots.txt checker processes input data instantly inside your browser.

Sample Input Sitemap URL: https://example.com/sitemap.xml

Computed Result Status: Valid (Found 124 URLs, 0 format syntax errors)

Execution Mode Client-Side In-Browser JS

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About This Tool

This comprehensive robots.txt checker tool allows you to analyze and validate your website's robots.txt file. Simply enter a URL or upload your robots.txt file to get detailed analysis including syntax validation, directive checking, common errors detection, and crawl rule verification. The tool checks for proper formatting, validates user-agent directives, analyzes allow/disallow rules, and identifies potential issues that could affect search engine crawling. Perfect for webmasters, SEO professionals, and developers who need to ensure their robots.txt files are correctly configured.

Save your calculation history with a free account

How to Use

Enter a website URL in the input field OR click 'Upload File' to select a robots.txt file from your computer
Choose analysis options: Basic validation, Full analysis, or Common errors check
Click 'Analyze Robots.txt' button to start the analysis
View detailed results including syntax validation, directives found, crawl rules, and any errors detected
Download the analysis report as a text file if needed

Frequently Asked Questions

Find Quick Answers

What is a robots.txt file?

A robots.txt file is a text file that tells search engine crawlers which pages or files they can or cannot request from your website. It's placed in the root directory of your website and follows specific syntax rules.

Why should I check my robots.txt file?

Checking your robots.txt file ensures it's properly formatted and doesn't contain errors that could accidentally block search engines from indexing important pages. Common issues include syntax errors, conflicting rules, or overly restrictive directives.

Can this tool check robots.txt files behind login?

No, this tool can only analyze publicly accessible robots.txt files. For URLs, it fetches the robots.txt from the standard location (domain.com/robots.txt). For private or password-protected sites, you'll need to upload the file directly.

What analysis options are available?

The tool offers three analysis modes: Basic validation (checks syntax and formatting), Full analysis (includes directive validation and rule checking), and Common errors check (focuses on typical mistakes like conflicting allow/disallow rules).

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