Codcy

Codcy Image Optimizer converts your existing JPEG and PNG images to WebP format in bulk — directly on your server, with no third-party API or paid subscription required.
WebP images are significantly smaller than JPEG and PNG files (typically 60–95% smaller), which leads to faster page loads, lower bandwidth usage, and better Core Web Vitals scores.
How it works:
<ol>
<li>Scan — Analyzes your entire Media Library. Shows total image count, file size, and format breakdown before any changes are made.</li>
<li>Review — You decide when to start. Nothing is changed until you click Start.</li>
<li>Optimize — Converts images in batches of 20. Originals are backed up automatically.</li>
<li>Report — A detailed summary shows converted count, space saved, average compression rate, and any errors.</li>
</ol>
Key features:
<ul>
<li>Converts JPEG and PNG to WebP</li>
<li>Automatic backup of original files to <code>uploads/codcy-image-optimizer/backup/</code></li>
<li>Skips images where WebP would be larger than the original</li>
<li>Fixes EXIF orientation automatically (Imagick)</li>
<li>Resumes from where it left off if interrupted</li>
<li>Does not alter image dimensions or crop ratio</li>
<li>No external API, no account required</li>
<li>Works with Imagick (preferred) or GD Library</li>
</ul>
What it does NOT do (intentionally):
<ul>
<li>Does not resize images</li>
<li>Does not process GIF files (may contain animation)</li>
<li>Does not delete backups automatically</li>
</ul>

Codcy Image Optimizer

Bulk convert JPEG and PNG images to WebP. No external service. Runs entirely on your server with automatic backup.

EsLaM Hamed

Image Boost is a free, powerful image optimization plugin that works 100% locally on your server. Unlike other optimization plugins, Image Boost requires no API keys, makes no external requests, and has no usage limits. Your images never leave your server.
It uses your server’s built-in Imagick or GD library to intelligently compress JPEG, PNG, GIF, and WebP images — reducing file sizes by up to 60% without visible quality loss.
<h4>🚀 Why Image Boost?</h4>
<ul>
<li>100% Local Processing — No API keys, no cloud uploads, no privacy concerns</li>
<li>Zero Usage Limits — Optimize unlimited images, forever</li>
<li>Smart Compression — Imperceptible quality loss with significant file size reduction</li>
<li>WebP Delivery — Automatic <code><picture></code> tag output for modern browser support</li>
<li>One-Click Bulk Optimize — Process your entire media library in minutes</li>
<li>Full Backup System — Every original is safely backed up and can be restored instantly</li>
<li>WooCommerce Ready — Works with product images, galleries, and all custom post types</li>
</ul>
<h4>⚡ How It Works</h4>
<ol>
<li>Upload an image normally to your Media Library.</li>
<li>Image Boost automatically compresses it in the background (if auto-optimize is enabled).</li>
<li>A WebP version is generated and served to supported browsers via smart <code><picture></code> tags.</li>
<li>View savings per image directly in the Media Library, or check the beautiful Dashboard for overall stats.</li>
</ol>
<h4>🎯 Compression Levels</h4>
<ul>
<li>Normal — Lossless metadata stripping. Zero quality loss. ~5-15% savings.</li>
<li>Pro — Smart lossy compression with imperceptible quality loss. ~40-60% savings. (Recommended)</li>
</ul>
<h4>📋 Full Feature List</h4>
<ul>
<li>Two compression levels: Normal (Lossless) and Pro (Smart Lossy)</li>
<li>Automatic WebP format conversion</li>
<li>Smart <code><picture></code> tag delivery for WebP across all themes</li>
<li>Server-side delivery config (Apache .htaccess / Nginx rules)</li>
<li>Background optimization queue via WP-Cron</li>
<li>Bulk Optimization with real-time progress bar</li>
<li>Auto-optimize images on upload</li>
<li>Full backup & one-click restore system</li>
<li>Per-image optimization stats in the Media Library</li>
<li>Image resizing (configurable max width)</li>
<li>Metadata stripping with optional copyright preservation</li>
<li>Native lazy loading injection</li>
<li>Skip specific thumbnail sizes</li>
<li>30-Day Analytics Dashboard with savings chart</li>
<li>WooCommerce & Custom Post Type support</li>
<li>Multisite compatible</li>
<li>Clean uninstall with optional data removal</li>
<li>Beautiful, modern admin dashboard with dark theme</li>
<li>Comprehensive documentation page built-in</li>
</ul>

Imagi Boost

Compress and optimize your WordPress images locally — no API keys, no limits. Supports WebP, bulk optimization, and auto-optimize on upload.

Codcy Image Optimizer vs Imagi Boost