SimplePDF Copilot: AI-Powered Client-Side PDF Form Filler
SimplePDF Copilot is an AI assistant that interacts with PDF editors to fill fields, answer questions, add fields, and delete pages, all while keeping the PDF client-side for privacy. Built on SimplePDF, a seven-year-old privacy-respecting PDF editor used by 200k+ monthly users, Copilot uses client-side parsing, rendering, and field detection. The text and user messages are sent to a configurable LLM (default DeepSeek V4 Flash via demo proxy, or BYOK for any cloud provider, or fully local via LM Studio). Unlike typical 'Chat with PDF' tools that only retrieve text/OCR, Copilot can act on the PDF, including field detection using CommonForms by Joe Barrow with added heuristics.
Key facts
- SimplePDF Copilot is an AI assistant for PDF editing.
- It fills fields, answers questions, adds fields, and deletes pages.
- The PDF never leaves the browser; all processing is client-side.
- SimplePDF has been operating for 7 years with 200k+ monthly users.
- Default LLM is DeepSeek V4 Flash; users can bring their own key or use local models.
- Field detection uses CommonForms by Joe Barrow with custom heuristics.
- Unlike other tools, Copilot can act on the PDF, not just retrieve text.
- The tool is accessible via a web interface.
Entities
Institutions
- SimplePDF
- DeepSeek
- LM Studio
- CommonForms