A free program for Android, by QR Code Scanner..

You can quickly scan and convert any documents or images to PDFs with this free PDF scanner app.

This simple scanner uses your device camera to quickly scan documents. You can use it to scan, import, and convert documents and images, and share as PDF/JPG with just one click!

Why choose ACE Scanner:

This free PDF scanner app is one of the best and most simple PDF converter and document scanner apps available for Android devices. It is easy to use and supports a variety of document types, including receipts, notes, documents, invoices, photos, business cards, certificates, etc. You can print out the scan results right away via Cloud Print.