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

SimplePDF Copilot launches an AI assistant for PDF form interaction using client-side tool calling, keeping documents entirely in-browser via local parsing and rendering. The system executes discrete tools for field filling, page deletion, and field insertion without server-side document exposure. Practitioners building privacy-sensitive document workflows should evaluate this against server-dependent alternatives like Adobe Acrobat AI or DocuSign.