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.

Stintlief Technologies

Stintlief WebP Converter automatically converts uploaded JPEG, PNG, and GIF images to the modern WebP format, providing significant file size reductions while maintaining visual quality. The plugin includes smart features to ensure safety and reversibility.
<h4>Key Features</h4>
<ul>
<li>Automatic Conversion: Converts images to WebP on upload without manual intervention</li>
<li>Smart Size Comparison: Only keeps WebP if it’s smaller than the original (configurable)</li>
<li>Safe Backups: Optional automatic backup of original files for easy restoration</li>
<li>One-Click Restore: Restore original images from attachment edit screen</li>
<li>Animated GIF Protection: Automatically skips animated GIFs to preserve animation</li>
<li>Configurable Settings: Control max dimensions, compression quality, and behavior</li>
<li>No External Services: All processing happens on your server – no data sent elsewhere</li>
<li>Performance Boost: WebP images are typically 25-35% smaller than JPEG/PNG</li>
</ul>
<h4>Privacy & Data Handling</h4>
This plugin does not: 
* Send any data to external servers 
* Store personal user information 
* Track users or create logs (except standard WordPress debug logs when WP_DEBUG is enabled) 
* Use cookies or external APIs
Backup files (if enabled) are stored locally on your server in the uploads directory and are not publicly exposed unless explicitly accessed.
<h4>Supported Image Formats</h4>
<ul>
<li>JPEG (.jpg, .jpeg)</li>
<li>PNG (.png)</li>
<li>GIF (.gif) – static only, animated GIFs are preserved</li>
<li>HEIC/HEIF (if server supports)</li>
</ul>
<h4>Requirements</h4>
Your server must have one of the following: 
* Imagick extension with WebP support 
* GD extension with WebP support
The plugin will display a notice if WebP support is not available.
<h3>Privacy Policy</h3>
This plugin does not collect, store, or transmit any personal data. All image processing happens locally on your WordPress server. Backup files (if enabled) are stored in your uploads directory and are not shared or transmitted to external services.
If you have privacy requirements, you can disable the backup feature in Settings → Media.
<h3>Credits</h3>
Developed by Stintlief Technologies with a focus on performance, safety, and WordPress best practices.

Stintlief WebP Converter

Automatically convert uploaded images to optimized WebP format with safe fallbacks, optional backups, and easy restoration.

LehmannLabs WebP Optimizer vs Stintlief WebP Converter