Quick Response codes are basically two-dimensional bar codes that can be interpreted by a mobile phone camera equipped with a code-reading app. Once the QR code is scanned, the Web address embedded in the image pops up on the cell phone’s browser.
QR code-generating sites include Kaywa, Qurify and Delivr. The Google URL Shortener will also create a QR code file from a shortened link — just click Details to see the image file.
Once converted, you can download the QR image file and then attach it to your e-mail signature, upload it as a Facebook profile photo, print it or post it elsewhere online. Some QR-conversion sites can also encode maps, text, phone numbers or RSS feeds.
