Kuar is a simple QR code generator.

Features:

• Image can be generated in multiple scales: 1x (S), 16x (M) and 32x (L)
• 4 styles: black on white, white on black, black transparent and white transparent
• Error correction levels: L (7%), M (15%), Q (25%), H (30%)
• You can open multiple windows for simultaneous work on several QR codes
• QR code can be dragged into other apps, save in PNG format or copied into clipboard
• Contains Safari extension that turns your current page into QR code
• Contains share extension that allows you to generate QR code from selected text or vCard