bijon

Use this qr code wordpress plugin to create a qr code on any site of your WordPress installation. Content can be any text or the current URL of the site where it is embeded.
How to use it:
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Use the shortcode [qr-code] within your site to generate a qr code including the URL of the current site
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<li>It`s not neccessary to give any parameters!</li>
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<h3>Author</h3>
Bijon Krishna Bairagi
“I create useful free microsites!” 
(https://bijonkrishnabairagi.blogspot.com/” Free qr code online generator”)

QR Code Generator

QR Code Wordpress plugin to insert a QR code in your blog. The qr code contains the current URL or any other text you like.

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.

QR Code Generator vs QutenizeR