# CrawlerCheck Homepage Summary

CrawlerCheck is a free tool that helps users test if search engine bots and AI crawlers can access their websites. It analyzes robots.txt rules, HTTP headers, and meta tags to determine whether bots like Googlebot, ChatGPT-User, ClaudeBot, and Perplexitybot are allowed to crawl a given URL.

[Homepage URL: https://crawlercheck.com/]

Main Features:
- Checks crawl permissions for Googlebot, Bingbot, GPT bots, Claude, and Perplexity
- Validates access against 150+ known web crawlers via the Directory
- Reports status code, robots.txt rules, crawl-delays and meta robots instructions
- Provides detailed Blocking Impact analysis and Safety Scores
- Explains reasons why a URL may be blocked or allowed
- Useful for SEOs, developers, content managers, and digital marketers

Supported Crawlers:
- Googlebot
- Bingbot
- ChatGPT-User
- ClaudeBot
- Perplexitybot
- And 150+ others in the [Directory](https://crawlercheck.com/directory)

How It Works:
CrawlerCheck performs a lightweight, server-friendly analysis. When a user submits a URL, the tool executes a single fetch of the target page and its robots.txt file using a standard browser User-Agent. It does not send multiple requests to the target server. Instead, it uses internal logic to simulate how 150+ supported crawlers would interact with those downloaded rules. It inspects:
- The HTTP response (e.g. 200 OK, 403 Forbidden)
- The robots.txt file and whether it disallows specific bots
- The meta robots tag (index/noindex, follow/nofollow)
- The X-Robots-Tag HTTP header
- Any server-level blocking patterns

[How It Works URL: https://crawlercheck.com/#how-crawlercheck-works]

SEO Tools:
CrawlerCheck includes suggestions for how to fix crawlability issues, such as:
- Updating robots.txt
- Adjusting meta tags
- Fixing server configurations

[SEO Tips: https://crawlercheck.com/#how-to-improve-seo-visibility]

Crawler & Operators Directory:
Search and filter 150+ bots by category, safety rating, or operator.
- **Crawlers**: Detailed profiles for individual bots.
- **Operators**: Browse bots by their parent company (e.g., OpenAI, Google).

[Crawler Directory URL: https://crawlercheck.com/directory]
[Operators Directory URL: https://crawlercheck.com/directory/operators]

## Bot Identification (for administrators)

[Bot Information URL: https://crawlercheck.com/bot]

CrawlerCheck publishes a technical identification page for WAF operators and bot management platforms. Key facts:
- On-demand, user-initiated diagnostic tool — not an autonomous scraper or AI training bot
- Single-fetch hybrid engine: one page request + one robots.txt request per user check
- Simulates supported crawlers via in-process Go logic (no per-user-agent HTTP to target sites)
- Contact for verification inquiries: https://x.com/crawlercheck
- Page is `noindex` and excluded from sitemap-core.xml

About the Creator:
This project is developed and maintained by Attila Bögözi, SEO strategist and web developer. Learn more at [https://bogozi.com/](https://bogozi.com/).