Mateusz Krosnowski

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.
Key Features: 
* Automatic WebP Conversion: Automatically converts JPG, JPEG, and PNG uploads to WebP. 
* Smart Compression: Maintains high visual quality while drastically reducing file sizes. 
* Bulk Optimization: Process your existing media library with a built-in batch processing tool. 
* Easy Toggle: Quickly enable or disable optimization directly from the Media Library. 
* Content Replacement: Automatically updates post content to point to the new WebP versions of your images.

Optisize – WebP Konwerter

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

BabaPinnak

ImOptimizer – Optimize Images is a safe, lightweight way to serve next-gen images on WordPress by converting uploads to WebP.
Most optimization plugins either rely on external APIs or risk server crashes by processing images without checking memory limits. ImOptimizer runs fully on your server using the native PHP GD library and includes a Smart Memory Guard that estimates RAM usage before converting—helping prevent memory exhaustion.
<h3>🚀 Why ImOptimizer?</h3>
<ul>
<li>Boost Core Web Vitals: WebP images reduce page weight and speed up loading.</li>
<li>Zero API Fees: No subscriptions, no credits, no data sharing. Runs locally.</li>
<li>Server Safety First: Skips risky conversions on low memory and detects conflicts (Smush/EWWW/ShortPixel, etc.).</li>
<li>Set & Forget: Auto-converts JPG/JPEG/PNG at upload time.</li>
</ul>
<h3>⚡ Feature Highlights</h3>
<ul>
<li>Smart Conversion: Converts the main image AND generated thumbnails (Media Library, WooCommerce, etc.).</li>
<li>Self-Cleaning Logs: Optional logging with retention cleanup (Cron).</li>
<li>MIME Sync: Updates WordPress metadata so <code>.webp</code> is recognized correctly.</li>
<li>Privacy Focused: Your images never leave your server.</li>
</ul>

ImOptimizer – Optimize Images

Boost site speed by automatically converting uploads to WebP. Features smart memory protection, detailed logging, and zero API dependencies.

Optisize – WebP Konwerter vs ImOptimizer – Optimize Images