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QR Code Generator

A QR (Quick Response) Code is a two-dimensional matrix bar code that works with most phones natively or with an application download from a mobile phone store. To generate your QR Code follow the steps below.

  • Enter the full web address of the website you wish to go to.
  • Change the defaults (if needed to the right).
  • Once you've done that click "Generate QR Code".
  • Scan your new code with your phone and verify it loads the page you are wanting. Make any appropriate changes (if needed).
  • When complete right click on the QR Code and choose Save and save it locally to your computer.
QR Code Size (Default is 250 x 250):
Dot Size (Default is auto):
Version (Default is 7):
Web Address:
 
 

Generated Bar Code

There has been no QR Code generated yet.
QR Code Version 1
 

QR Code Software

If you don't already have QR Code software you can download for the major phone vendors from the following links:

QR Code Structure

Disregarding the data, which consists of the actual encoded data, along with the error correction bits, the structure of the code includes the module groups listed below:

  • Finder Pattern: The finder pattern is a concentric square of alternating colors, located in all corners of the symbol except the bottom right. They are used by decoders establish orientation. The center is a 3x3 black square and is surrounded by a one-module-thick white box, which is surrounded by a one-module-thick black box, making the full pattern 7x7 modules.
  • Alignment Pattern: The alignment pattern is only included in the rendered QR code in version 2 and above. Its purpose is to allow the decoder to scan a skewed image, and convert it to the virtual grid of black and white modules, representing the encoded data. The alignment pattern is made of concentric squares, much like the finder patterns, with the center being a single black module.
  • Timing Pattern: The timing pattern is an alternating stripe of black and white modules, starting at the lower left corner of the upper right Finder Pattern, going horizontally to the upper left finder pattern and then going vertically to the lower left finder pattern.
  • Format Data: The format data is information, pertaining to the Masking rule used in the QR Code, along with error correction level. When the data in the QR code is encoded, some of the modules are inverted, in accordance with a predefined rule, in order to improve readability, and ensure that there are no big clusters of same-colored modules. This process is called masking, and the masking information is included in the format data, to alert the decoder that certain modules have been inverted.
    The format data is encoded in 15 bits. One full copy of the format data is located around the upper left finder pattern. A second copy, divided into 7 and 8 bits, is located next to the other two finder patterns.
  • Version Data: The version data includes information on which version the QR code is. This data is encoded into 18 modules, in a 6 by 3 matrix. Two copies of the version data matrix are included in the QR code - one next to the upper right finder pattern, and the other next to the lower left one.
  • Blank Space: Additionally, around each QR code, there is an obligatory 4-modules-wide white space area:
  • Data: The data occupies all available modules, not occupied by any of the formatting data segments mentioned above. If the data is smaller than the capacity of the remaining modules, it is padded, in order to ensure that all modules are used. Additionally, the data consists of the actual encoded data, entered by the user, and the error correction bits, calculated on that data.
 
QR Code structure

QR Code blank space