A free program for Android, by Neptune Solutions.

Document Scanner – Cam Scanner is a free document scanner app for Android phones and tablets. It can scan and save most documents, including paper, books, ID cards, business cards, and personal tags.

You can use it to scan your documents and save them in a number of different file formats, including JPG, PNG, BMP, TIFF, PDF, and more. It has a simple and intuitive interface that makes it easy to use, even for beginners.

You can crop and resize the image, apply filters, and add text, overlay, and color effect. You can also use the camera to capture an image and add your signature and watermark to it.

You can save the edited document in the form of PDF or image on your device.