Gooscanner

Key capabilities:
* Easy to convert image to pdf
* High-quality and consistent user interface for digitizing physical
documents.
* Automatic capture with document detection.
* Accurate edge detection for optimal crop results.
* Automatic rotation detection to show documents upright.
* Editing functionalities to crop, apply filters, remove shadows, clean stains,
and seamlessly send digitized files back to your app.
* On-device processing, preserving user's privacy.