QR Code Tag (qr-code-tag) free WordPress plugin

The QR Code Tag plugin creates QRCodes for your blog.

Features:

• Choose your QR Code generator: Google Chart API (online connection required) or QR Code Lib (included)
• Uses cURL if allow_url_fopen is disabled (Google Chart API)
• GIF, PNG or JPEG image output
• All QR Code images are cached
• Use as a Sidebar Widget
• Use the Shortcode [qrcodetag]content[/qrcodetag] within your posts
• Use the Tooltip mode [qrcodetag tooltip="content"]some text[/qrcodetag] within your posts
• Use the PHP function inside your own template
• “Best Read Mode” for optimized QR Code image size
• Works with PHP 5.3 as well
• Works on symlinked plugin folders
• Available plugin admin interface languages: English, German

Demo

See this blog entry for a tooltip mode demo.
Move your mouse over the application links.

Acknowledgements

This WordPress QR Code Tag Plugin is partly based on Super Cool QRCode Widget by Matias S..

It uses:

• Google Chart API for online code creation
• Y. Swetakes QR Code Library for code offline creation
• J. Zaefferers jQuery Tooltip Plugin