ClaudeBot checker: test whether Claude AI can read your site
Claude is increasingly used by professionals for research, analysis, and decision-making. When users ask Claude about products, services, or topics in your domain, Claude relies on content that ClaudeBot has successfully crawled. If ClaudeBot receives an empty JavaScript shell from your site, Claude has nothing to cite.
This free ClaudeBot checker fetches any URL using Anthropic's exact ClaudeBot user-agent and shows you the raw HTML response. Like every other AI crawler, ClaudeBot does not execute JavaScript - your client-rendered content is completely invisible to it.
Paste a URL below to see whether Claude can actually read your site.
How to use this tool
- 1
Choose a crawler from the list below (or select one from the category tabs)
- 2
Enter your page URL in the input field
- 3
Click 'Simulate crawl' to fetch your page with that bot's user agent
- 4
Review the HTML response - check for your page title, main content, and meta tags
- 5
Test multiple crawlers to compare how each one sees your site
How it works
When you select a crawler and enter a URL, we send a server-side HTTP request using that bot's exact User-Agent string. For example, selecting Googlebot sends the request with 'Mozilla/5.0 (compatible; Googlebot/2.1)' - the same identifier Google's real crawler uses.
Your web server receives this request and responds based on the User-Agent. If you have dynamic rendering, cloaking rules, or bot-specific logic configured, the response will reflect that. This is exactly what happens during a real crawl - we are replicating the full request/response cycle.
The returned HTML is then analysed for SEO elements: title tag, meta description, Open Graph tags, heading structure, canonical URL, structured data, and overall text content. Each element is scored, and the tool flags missing or problematic items with severity ratings.
When you select multiple crawlers, each one makes an independent request in parallel. The results are displayed side by side in a comparison table so you can spot differences - for example, a page that returns complete HTML for Googlebot but an empty shell for GPTBot.
Understanding Claude (ClaudeBot)
ClaudeBot is Anthropic's web crawler that indexes content for Claude, one of the leading AI assistants. Claude uses crawled web content to provide accurate, well-sourced answers to user questions. If your pages return empty HTML, Claude cannot reference your business, products, or expertise.
Like other AI crawlers, ClaudeBot does not execute JavaScript. It reads the raw HTML response from your server. For modern JavaScript applications, this typically means ClaudeBot sees an empty page with no content, no meta tags, and no structured data.
Claude is increasingly used in professional and enterprise contexts for research, analysis, and decision-making. When professionals ask Claude about products, services, or topics in your domain, having your content accessible to ClaudeBot means Claude can accurately represent your offering.
ClaudeBot respects robots.txt and identifies itself clearly in its User-Agent string. Pre-rendering ensures your content is accessible to ClaudeBot without any code changes to your application.
Frequently asked questions
Is ClaudeBot the same as Claude Code?▾
No. ClaudeBot is Anthropic's web crawler that indexes content for Claude's knowledge. Claude Code is a development tool. ClaudeBot crawls websites to help Claude provide accurate answers about your content.
How do I make my site visible to Claude?▾
Ensure your pages return meaningful HTML content in the initial server response. If you use a JavaScript framework like React or Vue, pre-rendering serves fully-rendered HTML to ClaudeBot while keeping your normal app for human visitors.
Can I control what ClaudeBot crawls?▾
Yes. ClaudeBot respects robots.txt directives. You can allow or block specific paths. However, blocking ClaudeBot means Claude cannot reference your content when users ask about topics you cover.
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