This simple yet highly customizable add-on converts the current URL to a QR code displayed in a popup from an icon in the toolbar.
QRL provides a simple solution to transferring URLs from your desktop computer to your mobile phone. This is accomplished by generating a QR code for the currently displayed web site (URL) viewed in you browser. The QR code generated can then be scanned by any number of apps on your mobile phone which can scan QR codes.
This idea was conceived by my desire to be able to share a URL with my friends using instant messaging on my smartphone. I thought this was a more elegant and easy solution than copying the URL character by character or emailing myself the URL only to then open it on my mobile phone and share it.