lehmannlabs

LehmannLabs WebP Optimizer is focused on one core goal: faster page load times.
The plugin converts your WordPress images to WebP and serves WebP files on the frontend whenever available. This reduces image payload and helps improve Core Web Vitals and user experience.
It was developed for WordPress websites built with Elementor and works well with typical Elementor image output (including image widgets, carousels, and background image use cases).
Unlike many plugins in this category, LehmannLabs WebP Optimizer is fully free to use, with no advertising, no tracking, and no premium upsells. Many competing plugins are either limited in their free version or are generally only available as paid products.
Tested with: 
– Elementor v3.35.6 
– Elementor Pro v3.35.1
Key benefits: 
– Faster frontend image delivery through WebP replacement 
– Completely free, with no ads and no paid upgrades 
– No feature limits in the free version and no paid-only core workflow 
– Optional auto-conversion on upload 
– Batch conversion for existing media 
– Safe fallback strategy and backup/restore tools 
– No external API calls, no tracking
Main features: 
– WebP generation for full-size and intermediate image sizes 
– Output modes: 
 – Picture mode (recommended): WebP source with fallback image 
 – Direct mode: direct URL/srcset replacement to WebP when available 
– Original image backup to <code>uploads/slimage-backup/YYYY/MM/</code> 
– Optional resize with configurable maximum edge length 
– Batch tools in wp-admin: 
 – Scan & Optimize 
 – Delete WebP Files 
 – Restore Originals 
– Site Health integration for WebP capability checks

LehmannLabs WebP Optimizer

Improve page speed in WordPress with a free WebP optimizer for Elementor workflows. No ads, no tracking, no paid upsells.

WPS.sk

Dušan

Image Optimizer by wps.sk optimizes images when uploading. Define the maximum image size and choose which file types should be converted to webp and what the compression or quality of the optimized image should be.
<h4>Features</h4>
<ul>
<li>Retain or delete original images after optimization</li>
<li>Set image quality and WebP compression method</li>
<li>Convert specific image types to WebP</li>
<li>Automatically set image alt text based on filename</li>
<li>Define maximum width for uploaded images</li>
<li>Bulk image optimization</li>
</ul>
<h4>Settings</h4>
<ul>
<li>Go to Settings -> Image Optimizer by wps.sk in your WordPress dashboard. Here you can set the image quality, WebP compression method, and other options.</li>
</ul>

Image Optimizer by wps.sk

Optimizes images on upload. Define max. size and select the types of images to convert to webp and what quality the optimized image should have.

LehmannLabs WebP Optimizer vs Image Optimizer by wps.sk