Ainsley Clark

Squidge is a FREE WordpPress Plugin built for developers in mind compressing and convert images using jpegoptim, 
optipng, cwebp, and libavif. It’s extremley simple to use and is designed to increase PSI and boost rankings.
<h3>Why?</h3>
Image compression in WordPress can be costly, confusing and sometimes just simply don’t work. We have aimed to simplify 
the process by requiring the developer to install the required package on the operating system and Squidge does the 
hard work for you.
<ul>
<li>IT’S FREE</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>
Squidge compresses and converts image files when the user has uploaded a file to WordPress.
<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>
To render images in templates, you can either set up nginx or apache rules to serve images dynamically or used the 
 squidge_image helper function. This dynamically checks if an <code>.avif</code> or <code>.webp</code> file is available on the file system 
and returns the output.
<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>
Written by <a href="https://github.com/ainsleyclark" rel="nofollow ugc">Ainsley Clark</a>

Squidge

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

Techbysh

WebPressor is the fastest and most powerful WordPress image optimizer plugin for converting your existing JPEG and PNG media to next-generation WebP and AVIF formats — the two formats recommended by Google for achieving perfect Core Web Vitals and PageSpeed Insights scores.
WebP images are typically 25–35% smaller than JPEG at the same quality. AVIF goes even further — delivering files up to 50% smaller than JPEG and 20% smaller than WebP. By serving these formats automatically to supported browsers, your site loads dramatically faster with zero manual effort.
Version 2.0.0 is a major release introducing AVIF support, a redesigned dashboard, live optimization logs, server-level rewrite rules, system diagnostics, and much more.
<h3>🚀 Why Image Optimization Matters</h3>
Google’s Core Web Vitals (LCP, FID, CLS) are directly impacted by image delivery performance. Large, unoptimized images are the #1 cause of slow page loads and poor PageSpeed Insights scores. WebPressor solves this automatically by:
<ul>
<li>Replacing heavy JPEG/PNG files with lightweight next-gen formats</li>
<li>Serving the smallest possible format each browser supports</li>
<li>Reducing total page weight by up to 50% with zero quality loss</li>
<li>Helping your site pass Google’s “Serve images in next-gen formats” audit</li>
</ul>
<h3>✨ Core Features</h3>
🔹 WebP Conversion — Automatically convert all JPEG and PNG images to WebP format with GD library 
🔹 AVIF Conversion (New in 2.0) — Generate AVIF images for the smallest possible file sizes (PHP 8.1+ with GD AVIF support required) 
🔹 Bulk Optimizer — Process your entire Media Library in batches with a real-time live console log 
🔹 Auto-Convert on Upload — Instantly convert new images as they are added to the Media Library 
🔹 Smart Browser Detection — Serve AVIF to AVIF-capable browsers, WebP to WebP browsers, and original images to legacy browsers 
🔹 Two Delivery Methods — Choose between HTML URL replacement or server-level <code>.htaccess</code> rewrite rules 
🔹 Adjustable Quality Sliders — Independent WebP quality (0–100) and AVIF quality (0–100) controls 
🔹 Lossy & Lossless Modes — Select compression mode for each format 
🔹 Storage Savings Dashboard — See exactly how many megabytes and what percentage you have saved 
🔹 System Status Panel — Checks GD extension, WebP/AVIF availability, folder write permissions, and server type 
🔹 Nginx Configuration Helper — Displays a copyable Nginx server block for manual rewrite rule setup 
🔹 Non-Destructive — Your original JPEG/PNG images are always preserved and never overwritten 
🔹 Compatible With All Themes — Works with Elementor, Divi, Avada, GeneratePress, Astra, Kadence, OceanWP, and more 
🔹 WooCommerce Ready — Optimizes product images, gallery thumbnails, and all image sizes automatically 
🔹 Multisite Compatible — Works on WordPress Multisite installations 
🔹 Translation Ready — Fully localized with <code>.pot</code> file included
<h3>📊 Performance Impact</h3>
 Format 
 Savings vs JPEG 
 Browser Support
 WebP 
 25–35% smaller 
 97%+ of browsers
 AVIF 
 40–50% smaller 
 80%+ of modern browsers
<h3>🛠️ How It Works</h3>
<ol>
<li>Install & activate WebPressor from the WordPress dashboard</li>
<li>Go to the WebPressor → Dashboard in the admin menu</li>
<li>Click Start Optimization to bulk-convert your existing Media Library</li>
<li>Watch the live console log as images are processed in real-time</li>
<li>Monitor your Storage Saved — the dashboard shows total bytes and percentage saved</li>
<li>New uploads are automatically converted in the background (if enabled in Settings)</li>
</ol>
<h3>⚙️ Delivery Methods</h3>
HTML Alteration (Default): 
WebPressor replaces image <code>src</code> URLs in page HTML on-the-fly. Safe, requires no server configuration, and works on any shared hosting.
Server Rewrite Rules (.htaccess): 
For Apache and LiteSpeed servers, WebPressor writes redirect rules directly into <code>/wp-content/uploads/.htaccess</code>. Requests for <code>.jpg</code> and <code>.png</code> files are transparently redirected to their <code>.webp</code> or <code>.avif</code> equivalents — this also handles background CSS images, slider images, and images loaded via JavaScript.
<h3>🔗 Useful Links</h3>
🔹 <a href="https://tbsplugins.com/webpressor-docs/" rel="nofollow ugc">Documentation</a> 
🔹 <a href="https://wordpress.org/support/plugin/tbs-webpressor/#new-topic-0" rel="ugc">Support Forum</a> 
🔹 <a href="https://github.com/TechbyshOrg/tbs-webpressor" rel="nofollow ugc">GitHub Repository</a>
<h3>Source Code & Build Instructions</h3>
This plugin’s JavaScript/CSS assets are minified for production. The original React source code and build tools are available publicly on GitHub.
Repository: 
https://github.com/TechbyshOrg/tbs-webpressor.git
How to build: 
1. Clone the repo: <code>git clone https://github.com/TechbyshOrg/tbs-webpressor.git</code> 
2. Enter the React admin folder: <code>cd react-admin</code> 
3. Install dependencies: <code>npm install</code> 
4. Build production assets: <code>npm run build</code>
<h3>Requirements</h3>
<ul>
<li>WordPress 6.0 or higher</li>
<li>PHP 7.4 or higher (PHP 8.1+ recommended for AVIF support)</li>
<li>GD library with WebP support enabled</li>
<li>GD library with AVIF support (optional, for AVIF conversion)</li>
</ul>

WebPressor – WebP & AVIF Image Converter, Optimizer & Compressor

Convert JPEG & PNG images to WebP and AVIF. Serve next-gen formats automatically. Reduce image sizes up to 50% for a faster, higher-scoring website.

Squidge vs WebPressor – WebP & AVIF Image Converter, Optimizer & Compressor