Tools
What they can read
AI Crawl Checker
Paste a URL to see the visible text a plain HTTP fetch returns — the way ChatGPT, Claude, and Perplexity fetch it. Closer to how ChatGPT, Gemini, Google AI Overviews, and Perplexity often read HTML without JavaScript. Not a browser-rendered preview; no paid-crawl parity claims.
Also try the retrieval-gate checklist or the llms.txt generator.