QR Code Scanner is the fastest and most user-friendly web application Instascan JS is a real-time webcam-driven HTML5 QR code scanner. Instascan JS wil help to find all camera attach with your system or mobile and you can read barcode using anyone that you want. So, basically, you have to copy bellow html code and run in your system. Then i also attach qr code for demo. So let's see I was looking for possibility to create QR code reader in my HTML5 based web page. I've done some googling and all the links point me to the mobile applications. Please help me with some pointers..