vkt005

Use Wa QRcode as shortcode in post content or widget area without editing your theme files
USAGE: Use [qrcode] 
OR 
[qrcode content=”Put your content for QR code” size=”80″ alt=”ALT_TEXT” class=”classname”]
shortcode in your post content to show the QR Code without editing your theme files
EXAMPLE: [qrcode] it will qr code of current page url 
OR 
[qrcode content=”Put your content for QR code” size=”80″ alt=”ALT_TEXT” class=”classname”]
size = Size is given for the size of QR Code it should be in Pixel
alt = tool tip on Generated QR code => Default Value “Scan the QR Code”
Classname = it will user defined class to Captcha for better css controll
Shadow = true
OR
Place below function in your theme file where you want to display QR code.
 ‘your custom content’,’size’=>75)) 
?> 
OR
By using QR code button in Editor

Wa Qrcode

Use Wa QRcode generate to put QR code to you post, page or content area or widget area without editing your theme files

dweius

QutenizeR plugin for wordpress allows you to easily create personalized and colorful QR codes on the fly. <a href="http://qutenizer.com" title="qutenizer.com" rel="nofollow ugc">QutenizeR.com</a> is a free online Web service (beta) that generates full-color personalized QR codes on the fly. QutenizeR plugin for WordPress connects to it and get the images without leaving your blog’s admin pages. Feedback will be welcome. 
Enjoy this plugin!
This plugin uses Jan Odvárko’s JSColor available at http://jscolor.com

QutenizeR

QutenizeR plugin for WordPress is a funny way to easily create cute & colorful QR codes.

Wa Qrcode vs QutenizeR