Show HN: Filling PDF forms with AI using client-side tool calling

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Hey HN!<p>I built SimplePDF Copilot: an AI assistant that can interact with the PDF editor. It fills fields, answers questions, focuses on a specific field, adds fields, deletes pages, and so on.<p>It&#x27;s built on top of SimplePDF that I started 7 years ago, pioneering privacy-respecting client-side pdf editing, now used monthly by 200k+ people.<p>As for the privacy model: the PDF itself never leaves the browser. Parsing, rendering, and field detection all run client-side.<p>The text the mode