Tool to generate a QR-Code. QR code is a 2D barcode standard made of black and white squares, recognizable with three smaller squares in its angles.
QR Code - dCode
Tag(s) : Character Encoding, Image Processing
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QR Code
QR Code Generator
Tool to generate a QR-Code. QR code is a 2D barcode standard made of black and white squares, recognizable with three smaller squares in its angles.
Answers to Questions
How to create a QR code?
Encryption of data in a QR code uses the ISO norm 18004:2015 (QRCode).
Example: 
How to decrypt a QR Code?
To read QR-Code, a quick and free solution is mobile phone. It exists a bunch of applications, such as Google Goggles here (link) or Google Lens here (link) (which has plenty of other use)
Without smartphone, on Internet:
Example: X-Zing takes a URL or an image to decode barcodes here (link)
Online Bar Code Reader, another universal tool not limited to QR code here (link)
How to recognize a QR Code?
The 2D bar code has generally 3 black squares in the corners and a matrix of black and white dots.
What does QR means in QR Code?
QR stands for Quick Response.
What are the variants of QR Code?
The center of the QR-Code is sometimes non-coding and therefore used to incorporate a logo. Otherwise, there are many other 2D barcodes like DataMatrix (FlashCode), Aztec, PDF 417, etc.
When QR code have been invented?
First QR codes have been published in Japan in 1999.
Source code
dCode retains ownership of the online 'QR Code' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (PHP, Java, C#, Python, Javascript, Matlab, etc.) no data, script or API access will be for free, same for QR Code download for offline use on PC, tablet, iPhone or Android !
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