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.

Dall Dexter

ImgDexter helps WordPress sites optimize new image uploads automatically. It converts supported uploads to WebP, applies practical dimension limits, controls output quality, and records clear diagnostics so site owners can see what happened.
The free Lite edition focuses on everyday new-upload optimization:
<ul>
<li>Automatically process new supported image uploads.</li>
<li>Convert eligible JPG, PNG, GIF, and WebP images to optimized WebP output.</li>
<li>Limit maximum image width and height.</li>
<li>Control WebP quality.</li>
<li>Optionally crop portrait images to a practical ratio.</li>
<li>Skip very small images when needed.</li>
<li>Keep a simple diagnostics log for recent processing results.</li>
</ul>
ImgDexter Pro is available separately for existing-library processing, controlled batch workflows, professional media review, cleanup guidance, deeper diagnostics, commercial updates, and support.

ImgDexter

Smart WebP image optimization for new WordPress uploads.

Optisize – WebP Konwerter vs ImgDexter