Professional Barcode Information
for Linear and Matrix Barcodes
Winforms .NET Barcode Generation SDK
Barcode Info > QR Code
2D Barcode
Data Matrix
QR Code
2D QR Code Barcode Symbology Overview
What is QR Code & barcode character set, structure, Error Correction Information
What is QR Code
QR Code, stands for Quick Response Code, is a 2D (2-dimensional) matrix symbology which was developed first used for automotive applications by DENSO in 1994. QR Code is with full range of capabilities and maximum data capacity which are encoded in an overall square pattern. Numbers, text, URL, data bytes and images could be encoded by QR Code. It is an efficient, high density barcode in accordance with ISO/IEC 18004:2006. QR Code is one of the most popular 2D barcode all over the world, which is widely used in many fields, such as smart phones (iPhone, Android, Windows Phone, Blackberry etc.) commercial tracking, entertainment and transport ticketing, product marketing and in-store product labeling.
QR Code Barcode Generator for .NET Applications
It is possible to create and print dynamic QR Code in .NET applications takes users input using powerful barcode generator provided by easily:
Detailed Information for QR Code Barcode

QR Code Valid Character Set

QR Code Structure

QR Code is consisted of encoding region and function patterns, namely finder, separator, timing patterns, and alignment patterns. All four sides of the QR Code are surrounded by the quiet zone border. There are forty sizes of QR Code symbol which ranges from version 1 to Version 40. And the QR Code ranges from 21 X 21 cells to 105 X 105 cells. Each cell encodes one bit and increase by degrees of four cells.
Error correction Level of QR Code
Like Data Matrix ECC 200, QR Code employs the Reed-Solomon error correction algorithm to recover from the damaging part. There are 4 levels error detection levels of QR Code symbology ranges from L, M, Q and H. Storage capacity may relatively reduced when error correction level get higher.