This App provides a dead simple way to generate QR-Codes from URLs Text Messages Phone Numbers Free Text or Contacts (vCard). It also allows to scan/read QR Codes if a webcam is available.
The QR Code Generator can now also generate Dynamic QR Codes. They refer to a static URL that hosts the actual content.

A QR code is a two-dimensional barcode that is readable by smartphones. It allows to encode over 4000 Characters in a two dimensional barcode. QR codes may be used to display text to the user to open a URL save a contact to the address book or to compose text messages.

To use with other browsers just open http://www.qrcodegenerator.info/ directly.