If you're looking to Download QR on your Chromebook laptop Then read the following guideline.

QR-read is a simple and lightweight code scanner. You can scan various types of codes. Whether it's a QR code or a Barcode or something else.  A quick scan of the code allows you to decode the information and save it on your phone. You can view the code data on the Internet, and if it is a product, then find more detailed information in the browser search. All your scanned codes cannot be used by anyone except you.