Efficient Document Scanning with Camscanner App

This video explains the usage of Camscanner app to scan documents and convert them into a PDF, so you can easily share documents with anyone or store them on your local drive.
For Batch Mode, select 'Multiple Pages' option on the right side of the Capture button. Rest of the process is same.

App may be downloaded from following links:
On Android phone you can get it from playstore