Systems and methods for interactive, user-driven detection, creation and completion of form fields in a digital document are provided. A document with form fields that require completion by a user is received, after which form fields are detected at the direction of the user. Once the user selects a possible form field, the system creates the appropriate fillable form field based on size, type, location, related text and other parameters of the form field and surrounding document. Additional levels of interaction include predictive text, pattern development and automatic completion of previously completed fields.