Dennis

<p>The QR Code Tag plugin creates QRCodes for your blog.</p>
<p>Features:</p>
<ul>
<li>Choose your QR Code generator: Google Chart API (online connection required) or QR Code Lib (included)</li>
<li>Uses cURL if <code>allow_url_fopen</code> is disabled (Google Chart API)  </li>
<li>GIF, PNG or JPEG image output</li>
<li>All QR Code images are cached</li>
<li>Use as a Sidebar Widget</li>
<li>Use the Shortcode <code>[qrcodetag]content[/qrcodetag]</code> within your posts</li>
<li>Use the Tooltip mode <code>[qrcodetag tooltip="content"]some text[/qrcodetag]</code> within your posts</li>
<li>Use the PHP function inside your own template</li>
<li>“Best Read Mode” for optimized QR Code image size</li>
<li>Works with PHP 5.3 as well</li>
<li>Works on symlinked plugin folders</li>
<li>Available plugin admin interface languages: English, German</li>
</ul>
<h3>Demo</h3>
<p>See <a href="http://www.spreendigital.de/blog/2009/09/18/essential-android-applications/" rel="nofollow ugc">this blog entry</a> for a tooltip mode demo.<br />
Move your mouse over the application links.</p>
<h3>Acknowledgements</h3>
<p>This WordPress QR Code Tag Plugin is partly based on <a href="https://wordpress.org/extend/plugins/super-cool-qrcode/" rel="ugc">Super Cool QRCode Widget</a> by <a href="http://www.incerteza.org/blog/" rel="nofollow ugc">Matias S.</a>.</p>
<p>It uses:</p>
<ul>
<li><a href="http://code.google.com/intl/de/apis/chart/" rel="nofollow ugc">Google Chart API</a> for online code creation</li>
<li>Y. Swetakes <a href="http://www.swetake.com/qr/index-e.html" rel="nofollow ugc">QR Code Library</a> for code offline creation</li>
<li>J. Zaefferers <a href="http://docs.jquery.com/Plugins/Tooltip" rel="nofollow ugc">jQuery Tooltip Plugin</a></li>
</ul>


QR Code Tag

Uncaught TypeError: $(...).tooltip is not a function

creates lots of errors with new wp

Use QR Codes (Google API or QR Code Lib) anywhere in your blog, as a Widget, Shortcode, Tooltip or with a PHP function.

thewebist

<p>This plugin provides the template tag <code>wp_get_post_image()</code>. Use it to call dynamically created images uploaded via the WordPress media uploader.</p>
<p>NOTE: This plugin is intended for use by WordPress developers and theme builders only.</p>
<h4>Usage</h4>
<pre><code><?php wp_get_post_image($args); ?>
</code></pre>
<h4>Default Usage</h4>
<pre><code><?php $args = array(
    'width' => null,
    'height' => null,
    'css' => '',
    'parent_id' => '',
    'post_id' => '',
    'filename' => '',
    'return_html' => true       
); ?>
</code></pre>
<p>By default, the function returns:</p>
<ul>
<li>The last uploaded image wrapped in an image tag (<code><img /></code>).</li>
<li>A proportionately sized image with a <code>width</code> no greater than <code>200px</code>.</li>
<li>The CSS class <code>wp-image-*ID*</code> and no other classes.</li>
<li>If you add <code>thickbox</code> via <code>css</code>, the appropriate anchor <code><a></code> tag will be added for Thickbox compatibility.</li>
</ul>
<h4>Parameters</h4>
<ul>
<li>
<p><strong>width</strong> (<em>integer</em>) – Width of image.</p>
</li>
<li>
<p><strong>height</strong> (<em>integer</em>) – Height of image.</p>
</li>
<li>
<p><strong>parent_id</strong> (<em>integer</em>) – The ID of the <code>post_parent</code> for the attachment. Specifying the <code>parent_id</code> returns the first image attached to the parent post according to <code>menu_order</code>.</p>
</li>
<li>
<p><strong>post_id</strong> (<em>integer</em>) – The ID of the attachment.</p>
</li>
<li>
<p><strong>filename</strong> (<em>string</em>) – The filename that corresponds to the <code>post_name</code> of the attachment.</p>
</li>
<li>
<p><strong>return_html</strong> (<em>boolean</em>) – <code>true</code> returns the image wrapped in an XHTML image tag. <code>false</code> returns the image’s URL.</p>
</li>
</ul>
<h4>Example</h4>
<pre><code><?php 
// use this example wherever you have access to $post->ID, e.g. the WordPress loop
if(function_exists('wp_get_post_image'))
    echo wp_get_post_image('width=450&css=alignleft&parent_id='.$post->ID);  
?>
</code></pre>


WP Get Post Image

Adds the function wp_get_post_image(), giving theme builders easy access to images associated with a post or page.

QR Code Tag vs WP Get Post Image