QRtool

QR-Code widget and shortcode in one QR-Code generator plugin. Use the QR-Code widget in your sidebars or generate QR-Codes in pages and articles by inserting [qr-code] right where you want your QR-Code to be displayed.
The QR Code widget is equipped with configurations for alignment, color (foreground and background), size, margin, error correction of QR-Code and more to suit the needs of your installment.
The shortcode [qr-code] can be extendet with attributes to achieve the same level of customization as with the widget. 
Example: 
[qr-code align=”left” class=”my-qr-code” color=”#000000″ background_color=”#FFFFFF” size=”4″ margin=”4″ level=”M” post_id=”0″]

WPQR QR-Code Generator

QR-Code widget and shortcode in one QR-Code generator plugin. Use the QR-Code widget in your sidebars or generate QR-Codes in pages and articles.

WCBeginner

Subrata Mal

Bappa Mal

In a world of smartphones, the term QR code (abbreviated from Quick Response Code) and it’s uses are no more alien to us. Each QR code is unique and can be associated with any object/entity.
The plugin WooCommerce QR code generator does exactly what it’s name say. It generates an unique QR code every time you create a product in your WooCommerce store and associates this code with the product’s URL. Next time you want to open your product in mobile, no need to look to and fro between your desktop and mobile. Just scan the code and your phone’s browser will automatically open that product URL.
The plugin even let’s you choose the QR code size as well as the code’s frame size. Happy scanning!
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Use of wc_qr_code Shortcode: 
 [wc_qr_code id='{put product_id}’ title='{put QR Code heading}’][/wc_qr_code]

QR Code for WooCommerce

Generate QR code for WooCommerce Products

WPQR QR-Code Generator vs QR Code for WooCommerce