It's simple, it do what it suppose to do.

I am amazed at how easy this add-on works, it's a great must have for reading/creating QR codes.

Fast, no online BS, and the feature of saving the QR code as an image (including SVG) is really valuable.

very good

You click on it, It generates a QR code, you scan it with your phone, that's it.
Simple, to the point, I love it!