in QR Codes and Augmented Reality
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Create a Quick QR Code: Just Type a URL!
Just add a web address below to create a QR code of any Web address.
Try it out! Type a URL:
Scan the QR Code to the right with your smart phone's QR Code/Bar Code reader and you should be directed to the URL above. If your phone doesn't have a Bar Code app, just go to the iPhone App Store or to Google Play and search for "QR code" or "bar code reader" (QR codes are a form of bar code).
This is the resulting QR Code:
How It Works
We use Google's free API to generate this QR code. Note the conversion required in the URL: Google requires us to percent-encode any special characters by converting them to their escaped hexidecimal values. This allows characters such as a "/" to be passed to Google as part of a query string, without them being misinterpreted.
You can find a list of ascii characters and their percent-encoded equivalents on Wikipedia.
Where Will You Take Them?
Whenever using QR codes on printed items, it's a good idea to indicate (with copy near the code) what the code will lead the user to. An example would be: "Scan this code for exciting discounts and offers available nowhere else."
From trial and error, we believe Google supports four QR Code sizes, with lengths and widths of 120, 240, 360 and 480 pixels. These sizes include the required white-space surrounding the QR code. We've identified this white space by adding a border to the display of the images in this article. This border is not part of the QR Code.
We've re-encoded the QR Code in the four sizes below: