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>


WP Images OTF Plugin

nosilver4u

<p>Automatically resize huge image uploads with Imsanity. Choose whatever size and quality you like, and let Imsanity do the rest.  When a contributor uploads an image that is larger than the configured size, Imsanity will automatically scale it down to the configured size and replace the original image.</p>
<p>Imsanity also provides a bulk-resize feature to resize previously uploaded images and free up disk space. You may resize individual images from the Media Library’s List View.</p>
<p>This plugin is ideal for blogs that do not require hi-resolution original images to be stored and/or the contributors don’t want (or understand how) to scale images before uploading.</p>
<p>You may report security issues through our Patchstack Vulnerability Disclosure Program. The Patchstack team helps validate, triage and handle any security vulnerabilities. <a href="https://patchstack.com/database/vdp/imsanity" rel="nofollow ugc">Report a security vulnerability.</a></p>
<h4>Features</h4>
<ul>
<li>Automatically scales large image uploads to a more “sane” size</li>
<li>Bulk resize feature to resize existing images</li>
<li>Selectively resize images directly in the Media Library (List View)</li>
<li>Allows configuration of max width/height and JPG quality</li>
<li>Optionally converts BMP and PNG files to JPG for more savings</li>
<li>Once enabled, Imsanity requires no actions on the part of the user</li>
<li>Uses WordPress built-in image scaling functions</li>
</ul>
<h4>Translations</h4>
<p>Imsanity is available in several languages, each of which will be downloaded automatically when you install the plugin. To help translate it into your language, visit https://translate.wordpress.org/projects/wp-plugins/imsanity</p>
<h4>Contribute</h4>
<p>Imsanity is developed at https://github.com/nosilver4u/imsanity (pull requests are welcome)</p>
<h3>Credits</h3>
<p>Originally written by Jason Hinkle (RIP). Maintained and developed by <a href="https://ewww.io" rel="nofollow ugc">Shane Bishop</a> with special thanks to my <a href="https://www.iamsecond.com/" rel="nofollow ugc">Lord and Savior</a>.</p>


Imsanity

Exactly What I need, sample and right, nothing more or less.

Great！


This plugin works great for sites where users either don't know how to resize & compress their images before uploading, or they're just too lazy to do so. I love that you're able to resize the original image, allowing you to save valuable server space. 👍


Perfect for resizing large images


This plugin does exactly what it says.  It also works with WebP, so combined with Cimo you have a perfect scenario for a health media library.


Perfect

Automatically resizes huge image uploads. Are contributors uploading huge photos? Tired of manually resizing your images? Imsanity to the rescue!

WP Images OTF Plugin vs Imsanity