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.
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 
– 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.

rbonfil

Only WebP Uploads automatically converts your image uploads (JPG, PNG, GIF) to WebP format. It handles all image sizes generated by WordPress, ensuring your site serves optimized, modern image formats.
Features: 
* Automatic Conversion: Converts images immediately upon upload. 
* Space Saving: Replaces original files with lighter WebP versions. 
* Database Integration: Updates WordPress metadata so the Media Library recognizes the file as WebP. 
* Bulk Conversion: Includes a tool to scan and convert existing images in your library. 
* WP-CLI Support: Manage conversions via command line using <code>wp onlywebp</code>. 
* Smart Filename Sanitization: Automatically cleans filenames (e.g., <code>mañana.jpg</code> -> <code>manana.webp</code>). For non-Latin names (e.g., Japanese), it generates a secure unique ID to ensure compatibility. 
* Security: Checks for Imagick support and sanitizes filenames.

Only WebP Uploads

Automatically converts uploaded images (JPG/JPEG/PNG/GIF) to WebP, including all WordPress sizes.

LehmannLabs WebP Optimizer vs Only WebP Uploads