ishitaka

<p>Associate images and posts in the media library at once (set “Uploaded to”).</p>
<h4>Supported media files</h4>
<ul>
<li>Images in post content</li>
<li>Featured images</li>
<li>WooCommerce products and product gallery images</li>
<li>Image Field in Advanced Custom Fields plugin</li>
<li>Image Field in Smart Custom Fields plugin</li>
</ul>


Associate Attachment

Associate the media library image with the post.

adamprohack

<h3>What does this plugin do?</h3>
<p>This plugin generate image thumbnails only when site need it, when someone call function with needed size,<br />
and saves disk space when image is uploaded to media library.<br />
You don’t need to use <strong><code>add_image_size()</code></strong> function.</p>
<h3>How it works?</h3>
<ol>
<li>Upload image to media library</li>
<li>Change function <strong><code>wp_get_attachment_image_url()</code></strong> to <strong><code>get_otf_image_url()</code></strong> in your wordpress template</li>
<li>When function is invoke the first time, the image is dynamically adjust, create and stored</li>
<li>Page serve image in need size</li>
</ol>
<h3>Documentation</h3>
<pre><code>`php
function get_otf_image_url(
    $image_id, $size_name, 
    $width = 0, $height = 0, 
    $crop_mode = ["center", "center"], 
    $mime_type = "image/jpeg", $quality = 70)
`
</code></pre>
<p><strong>Parameters</strong></p>
<ul>
<li>Required:<br />
*<strong>$image_id</strong>  – attachment id<br />
***$size_name** – dynamic size name<br />
***$width** – image width<br />
***$height** – image height</li>
<li>Optional<br />
*<strong>$crop_mode</strong> – image crop mode<br />
***$mime_type** – result image mime type<br />
***$quality** – result image quality</li>
</ul>
<p><strong>Return Value</strong></p>
<ul>
<li>Returns an url string</li>
</ul>


Associate Attachment vs WP Images OTF Plugin