Notice: The text you type will not be sent to a remote server because all the work can be done in your browser. It also enables you to download them and use them on a computer not connected to the internet.
This QR code generator offers some convenience features such as being able to drag & drop (or copy-paste) a file into the textbox. If the browser supports it (and you allow it), it can also constantly monitor the systems clipboard and generate a QR code from the clipboard's contents. (Download)
This QR code generator is designed to be as small as possible and thus offers significantly fewer features. (Download)