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.

Shakib R Khan

Super Duper Image Auto Optimizer compresses newly uploaded images (JPEG/PNG/WebP), strips EXIF, and generates modern formats (WebP/AVIF when supported). It also includes a one-click bulk optimizer in the admin and a WP-CLI command for existing media.
Highlights 
– Automatic optimization for new uploads (original + sizes) 
– One-click bulk optimization (batched via AJAX, resume) 
– WebP generation and AVIF when supported 
– Imagick preferred; GD fallback 
– No third-party services or tracking 
– WP-CLI: <code>wp sdiao:bulk</code>
<h3>Usage</h3>
<ul>
<li>Bulk optimize: Media → Super Duper Image Auto Optimizer → Bulk Optimize.</li>
<li>WP-CLI: <code>wp sdiao:bulk</code>.</li>
</ul>
<h3>FAQs</h3>
= Do I need to drag and drop into the plugin? = 
No. It hooks into normal uploads and runs automatically.
<h4>Does it generate WebP/AVIF for all sizes?</h4>
Yes (AVIF requires Imagick with AVIF support).
<h3>Privacy</h3>
Processes images locally; stores only minimal bulk progress (<code>sdiao_bulk_state</code>). No telemetry.
<h3>Security</h3>
Nonce + capability checks on AJAX; escaped admin output; no remote code.

Super Duper Image Auto Optimizer

Reduce image sizes on upload and in bulk, strip EXIF, and generate WebP/AVIF with Imagick or GD — no external APIs.

Optisize – WebP Konwerter vs Super Duper Image Auto Optimizer