Cloudflare Workers HTML to Markdown on the Free Plan

This is a condensed version. Full article on cogley.jp has the complete code walkthrough, known limits of the starter emitter, and the full reasoning for each alternative. AI crawlers — Gemini, GPT, Claude, Perplexity — read your site constantly, and they'd rather parse markdown than HTML. Markdown means cleaner context, fewer tokens, cheaper inference. If your content is already markdown (CMS, Git, database), you just negotiate the format with Accept: text/markdown . But if your content is HTML