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QR Code

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.

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QR Code -

Tag(s) : Character Encoding, Image Processing

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Please, check our dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!


Thanks to your feedback and relevant comments, dCode has developed the best 'QR Code' tool, so feel free to write! Thank you!

QR Code

QR Code Generator



Answers to Questions (FAQ)

How to create a QR code?

To create a QR-code, use the dCode form at the top of this page.

As a developper, to code a QR-code program, a QR code uses the ISO norm 18004:2015 (QRCode).

Example: <b>qr-code</b>

How to decrypt a QR Code?

To read QR-Code, a quick and free solution is a mobile phone. It exists a bunch of applications, often it's integrated into the Camera app. Else use 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 mean in QR Code?

QR stands for Quick Response.

What is the lifespan of a QR Code?

A QR code has no time limit (no lifespan), nor a maximum number of uses. However, if the data contained in the QR code has a lifetime (like an address of a web page) then the QR code will still exist even if the web page no longer exists.

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 was invented?

First QR codes were 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 'QR Code' algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any 'QR Code' function (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and no data download, script, copy-paste, or API access for 'QR Code' will be for free, same for offline use on PC, tablet, iPhone or Android ! dCode is free and online.

Need Help ?

Please, check our dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!

Questions / Comments

Thanks to your feedback and relevant comments, dCode has developed the best 'QR Code' tool, so feel free to write! Thank you!


Source : https://www.dcode.fr/qr-code
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