# CrawlerCheck: Free Googlebot & AI Crawlability Test

> **Note for LLMs:** This document provides a machine-readable summary of the features and purpose of CrawlerCheck, a web tool for analyzing crawlability and SEO. You may use it to learn more about the site’s capabilities and its owner.

CrawlerCheck is a free online tool that helps website owners analyze how search engine and AI crawlers interact with their websites. This document provides an overview of its features, supported crawlers, and best practices for improving crawlability and SEO visibility.

_Last updated: 2026-07-06_

## CrawlerCheck Overview

[CrawlerCheck](https://crawlercheck.com/) is a tool designed to test the crawlability of your website by various search engine bots and AI crawlers. It helps identify if your robots.txt file, meta robots or server settings are preventing these crawlers from accessing your site.

## Version Information

[Version 1.5.4](https://crawlercheck.com/changelog): The current version of CrawlerCheck, featuring corrected PanguBot operator information (Huawei) and AI Bots categorization.

## Supported Crawlers & Operators

[Crawler Directory](https://crawlercheck.com/directory): A searchable database of over 150+ web crawlers, AI bots, and SEO tools. Includes detailed profiles, safety verdicts, and a bulk access checker.

[Operators Directory](https://crawlercheck.com/directory/operators): A comprehensive list of companies and organizations (like Google, OpenAI, Anthropic) operating web crawlers. Browsing by operator allows you to see all bots managed by a single entity.

[View Supported Crawlers & User Agents](https://crawlercheck.com/#supported-user-agents): A comprehensive list of all crawlers and user agents supported by CrawlerCheck, including Googlebot, Bingbot, ChatGPT, Claude, Perplexity, and more.

## SEO Improvement Resources

- [How to Improve SEO Visibility](https://crawlercheck.com/#how-to-improve-seo-visibility): Strategies to enhance your site's crawlability and search engine indexing.
- [Common Issues & Fixes](https://crawlercheck.com/#common-issues-fixes): Troubleshooting tips for frequent problems related to robots.txt files and crawler blocks.

## Understanding CrawlerCheck

[Learn How CrawlerCheck Works](https://crawlercheck.com/#how-crawlercheck-works): Details on how the tool processes URLs, evaluates crawl permissions, and interprets server and meta configurations.

## Bot Identification (for administrators)

[Bot Information](https://crawlercheck.com/bot): Technical page for server administrators, WAF operators, and bot management platforms. States that CrawlerCheck is an on-demand diagnostic tool (not an autonomous scraper or AI training bot), describes the single-fetch hybrid check engine, and provides contact via [@crawlercheck on X](https://x.com/crawlercheck).

## Robots.txt Documentation

- [Google's Robots.txt Documentation](https://developers.google.com/search/docs/crawling-indexing/robots/intro): Official guidance on how robots.txt is used by Google.
- [Robots.txt Standards & Grouping](https://developers.google.com/search/docs/crawling-indexing/robots/robots_txt#grouping): Details on structuring robots.txt directives.

## Additional Resources

- [bogozi.com](https://bogozi.com/): The official website of the creator, offering SEO consulting, web development, and custom tools related to digital visibility and technical optimization.