Mateusz Krosnowski

<p>Optisize is a powerful yet lightweight WordPress plugin designed to automatically optimize your media library. It hooks into the upload process to ensure every image you add to your site is compressed and converted to WebP, significantly improving page load speeds and SEO performance.</p>
<p>Key Features:<br />
* <strong>Automatic WebP Conversion</strong>: Automatically converts JPG, JPEG, and PNG uploads to WebP.<br />
* <strong>Smart Compression</strong>: Maintains high visual quality while drastically reducing file sizes.<br />
* <strong>Bulk Optimization</strong>: Process your existing media library with a built-in batch processing tool.<br />
* <strong>Easy Toggle</strong>: Quickly enable or disable optimization directly from the Media Library.<br />
* <strong>Content Replacement</strong>: Automatically updates post content to point to the new WebP versions of your images.</p>


Optisize – WebP Konwerter

Automatically compresses images on upload and converts them to the modern WebP format.

Ainsley Clark

<p>Squidge is a FREE WordpPress Plugin built for developers in mind compressing and convert images using jpegoptim,<br />
optipng, cwebp, and libavif. It’s extremley simple to use and is designed to increase PSI and boost rankings.</p>
<h3>Why?</h3>
<p>Image compression in WordPress can be costly, confusing and sometimes just simply don’t work. We have aimed to simplify<br />
the process by requiring the developer to install the required package on the operating system and Squidge does the<br />
hard work for you.</p>
<ul>
<li><strong>IT’S FREE</strong></li>
<li>Unlimited file size, no limits.</li>
<li>Optimised for your site to rank.</li>
<li>CLI to regenerate all of your media files.</li>
<li>Helper functions to output images in templates.</li>
<li>Uses the native <code>cwebp</code> and <code>libavif</code> libraries.</li>
</ul>
<h3>What does Squidge do?</h3>
<p>Squidge compresses and converts image files when the user has uploaded a file to WordPress.</p>
<ul>
<li>Compresses JPG images using <code>jpegoptim</code>.</li>
<li>Compresses PNG images using <code>optipng</code>.</li>
<li>Converts JPG and PNG images to <code>.webp</code> files using <code>cwebp</code> with the appended extension  e.g. <code>image.jpg.webp</code>.</li>
<li>Converts JPG and PNG images to <code>.avif</code> files using <code>libavif</code> with the appended extension  e.g. <code>image.jpg.avif</code>.</li>
</ul>
<h3>Render Images</h3>
<p>To render images in templates, you can either set up nginx or apache rules to serve images dynamically or used the<br />
    squidge_image helper function. This dynamically checks if an <code>.avif</code> or <code>.webp</code> file is available on the file system<br />
and returns the output.</p>
<h3>Function</h3>
<pre><code>/**
 * Returns a <picture> element with source media for the standard file passed
 * (such as a JPG), the .avif file, the .webp file (if to exist on the file system).
 *
 * Appropriate <source> elements for image sizes with max widths.
 * Finally, the main be outputted with alt and title text.
 *
 * - If lazy is true, the data-src or data-srcset will be appended.
 * - If a class is set, the class will be outputted on the <picture> element.
 *
 * @param $image_id
 * @param string $class
 * @param false $lazy
 * @return string
 */
function squidge_image($image_id, $class = '', $lazy = false)
</code></pre>
<h3>Output</h3>
<pre><code><picture class="picture">
    
    <source media="(max-width: 400px)" srcset="/sample-image.jpg.avif" type="image/avif">
    <source media="(max-width: 400px)" srcset="/sample-image.jpg.webp" type="image/webp">
    <source media="(max-width: 400px)" srcset="/sample-image.jpg">
    
    <source srcset="/sample-image.jpg.avif" type="image/avif">
    <source srcset="/sample-image.jpg.webp" type="image/webp">
    
    <img src="/sample-image.jpg" alt="Alt text" title="Sample JPG">
</picture>
</code></pre>
<h3>Credits</h3>
<p>Written by <a href="https://github.com/ainsleyclark" rel="nofollow ugc">Ainsley Clark</a></p>

Squidge

Squidge is a FREE WordpPress Plugin built for developers in mind compressing and convert images using jpegoptim, optipng, cwebp, and libavif.

Optisize – WebP Konwerter vs Squidge