After Google launching its URL shortner service Goo.gl with QR codes, Now the king of URL shortner service Bit.ly added QR codes just like Google. Bit.ly growing like crazy even after Twitter dropped it as default link shortner. Every day more than 200 million URLs are decoded by Bit.ly. Recently Bi.ly raised around $8.9 million funds.
Just like Goo.gl, add .qr at end of the Bit.ly short URL., for example http://bit.ly/bXGF46.qr . With its awesome free URL shortner service, Bit.ly also provides Bit.ly pro a paid service. See the below graphic for Bit.ly stats.