“Summarise with AI” and “Ask your PDF” use a key you provide. It is saved only in this browser and sent only to the provider you pick. It is never sent to iDuckPDF. Use a key with a spending limit, and delete it on shared computers.
Provider
API key
Starts like sk-… for OpenAI or Anthropic, or AIza… for Google.
Model (optional)
Leave blank to use gpt-4o-mini. Providers rename models often, so change this if a request fails.
Local data
Recent tools, your theme and your key are stored in this browser only.