This plugin adds a QR Code for each post (link) published on the site. The plugin support all the registered built-in and custom post types, along with pages, this can be changed under the settings page of the plugin.
Settings
Following are the available configurable options in the plugin
Option Default Value
Size 300 pixels
Margin 20 pixels
Image Type PNG
Post Types [All Available Post Types]
Te puedes descargar este plugin para utilizarlo en tu instalación autoalojada de WordPress.