Generates a QR Code and inserts it into a blog post (shortcode) or sidebar widget. QR Code image is then cached on the local WordPress server.
QR Code is well described on Wikipedia.
Plugin generates a QR Code image using Esponce API 3.0. Image is then downloaded and cached so all images are served from a local server.
Edit a post and go into HTML mode:
[qrcode content="http://www.esponce.com/" size="90x90" foreground="#1982D1"]
Note: double quotes are escaped as " and new lines as &br;
There are some settings you can change. Open esp-qrcode.php in editor (or edit plugin code in WordPress) and change PHP constants: