Marco

<p>This plugin will display a QR code in your sidebar which you can easily scan with your handphone or tablet and read later on the way home, to office or to school.</p>


QR code generator

This plugin will display a QR code of the actually loaded page in your sidebar.

kmusiclife

<p>This plugin gives you making QR Code for your article permalink with Google Chart request in EASY. You are able to write shortcode like [qrcode-gc alr:”altname” class:”classname” id:”idname”] . If you require to apply new size QRCode, you might remove wp-qrcode-gc directory.</p>
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WP QRCode by Google Chart

This plugin gives you making QR Code for your article permalink with Google Chart request in EASY. You are able to write shortcode like [qrcode-gc alr …

QR code generator vs WP QRCode by Google Chart