Android phone comes with many built in apps, one of them of is google drive. Drive offer many option like folder, upload, google doc, google sheet, slide and scan. When you tap on scan option it will open phone rear camera to scan a document and convert picture into pdf file, let see how to do this.
1. Open google drive tap on “+” icon
2. Tap on “Scan” shoot a picture, after scan you will get some option like, paper size, image orientation, quality and crap, adjust scanned document as per your need and hit on “check Mark” it will convert image into pdf file format.