Easily add QR encoded data to any post using a simple mark-up.

WP-QREncoder

Allows post authors to easily add qrencoded images to their posts. Uses: QRcode Perl CGI & PHP scripts ver. 0.50: http://www.swetake.

The Weeky

Barcode Generator is a WordPress Plugin which will allow you to Generate your Barcodes in the Admin Panel itself under the Tools Tab.
*This Plugin provides you with 3 more options of Size, Orientation and Print option.
<pre><code>1. Size option will help you decide the size of the Barcode.

2. Orientation option will decide whether the Barcode will be Horizontal or Vertical.

3. Print option will print the normal text under the Barcode.
</code></pre>
*This Plugin automatically saves your Barcodes in images directory.

Barcode Generator

Barcode Generator is a Wordpress Plugin which will allow you to Generate your Barcodes in the Admin Panel itself under the Tools Tab.

WP-QREncoder vs Barcode Generator