An image of a document is received from an image capture device, the image being in a format of an image file. At least one location of a user input field is automatically detected within the image based on patterns previously detected in a set of other images that were annotated to identify locations of user input fields within the individual images of the set. Coordinates are determined for the at least one location, and an electronic document is generated based on the received image. Generation of the electronic document includes addition of a software user input component at the location within the image with use of the coordinates, the software user input component configured to receive input from a user in electronic form.