Online QR Code Generator

QR Code Data: 

A QR code can store up to three kilobytes (KB) of data:

7,089 numeric characters

4,296 alphanumeric characters (letters and numbers)

1,817 Kanji characters (Japanese logograms)

Size:

      [ Width & Height ]  

 

Right click the QR Code image to save to local (png format).

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QR Code VCard Generator

To add an online QR Code generator to your website or program,

Just link to this website's URL, this site is permanent available and free.

Technology Support:  cs@easiersoft.com

 
 

A QR code (quick-response code) is a type of two-dimensional matrix barcode. It was invented in 1994 by the Japanese company Denso Wave for labeling automobile parts.

Here are some key points about QR codes:

Design and Structure:

A QR code consists of black squares arranged in a square grid on a white background.
It includes fiducial markers that help imaging devices (such as cameras) read and interpret the code.
Unlike traditional barcodes, which are linear, QR codes are two-dimensional, allowing them to store more information.

Data Encoding Modes:

QR codes use four standardized modes of encoding:
Numeric: For encoding numeric characters (e.g., phone numbers).
Alphanumeric: For letters and numbers (e.g., URLs or text).
Byte or Binary: For encoding binary data (e.g., images or files).
Kanji: Specifically for Japanese logograms (characters).

Applications:

Originally used for tracking automobile parts, QR codes have expanded to various applications:
Product Tracking: Faster reading and greater data storage capacity.
Item Identification: Replacing individual bar-code labels.
Time Tracking: Used in document management and logistics.
General Marketing: QR codes can link to websites, vCards, emails, and more.

Scanning QR Codes:

Most modern smartphones have built-in QR code readers in their camera apps.

You can scan QR codes to:
Open webpages.
Add contacts (vCards).
Connect to Wi-Fi networks.
Compose emails or text messages.