Title: LehmannLabs WebP Optimizer
Author: lehmannlabs
Published: <strong>19 maart 2026</strong>
Last modified: 19 maart 2026

---

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# LehmannLabs WebP Optimizer

 Door [lehmannlabs](https://profiles.wordpress.org/lehmannlabs/)

[Download](https://downloads.wordpress.org/plugin/lehmannlabs-webp-optimizer.1.0.0.zip)

 * [Details](https://nl.wordpress.org/plugins/lehmannlabs-webp-optimizer/#description)
 * [Beoordelingen](https://nl.wordpress.org/plugins/lehmannlabs-webp-optimizer/#reviews)
 *  [Installatie](https://nl.wordpress.org/plugins/lehmannlabs-webp-optimizer/#installation)
 * [Ontwikkeling](https://nl.wordpress.org/plugins/lehmannlabs-webp-optimizer/#developers)

 [Ondersteuning](https://wordpress.org/support/plugin/lehmannlabs-webp-optimizer/)

## Beschrijving

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 `
uploads/slimage-backup/YYYY/MM/` – 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

## Installatie

 1. Upload the plugin folder to `/wp-content/plugins/lehmannlabs-webp-optimizer/`.
 2. Activate the plugin through the “Plugins” screen in WordPress.
 3. Open `LehmannLabs WebP > Settings` and review options.
 4. Use `LehmannLabs WebP > Tools` for batch actions.

## FAQ

### Are originals deleted?

No. Originals are preserved in `uploads/slimage-backup/` while backup is enabled.

### What happens if WebP is not supported on the server?

The plugin skips WebP generation and reports this in Site Health and admin notices.

### Can I restore optimized files?

Yes. You can restore per attachment or in batches.

### Can I delete the backup folder manually from the plugin?

Yes. Use the “Delete Backup Now” button in `LehmannLabs WebP > Settings`.

### Does it work with Elementor?

Yes. The plugin was developed for WordPress with Elementor and is optimized for 
common Elementor image output patterns.

## Beoordelingen

Er zijn geen beoordelingen voor deze plugin.

## Bijdragers & ontwikkelaars

“LehmannLabs WebP Optimizer” is open source software. De volgende personen hebben
bijgedragen aan deze plugin.

Bijdragers

 *   [ lehmannlabs ](https://profiles.wordpress.org/lehmannlabs/)

[Vertaal “LehmannLabs WebP Optimizer” in je eigen taal.](https://translate.wordpress.org/projects/wp-plugins/lehmannlabs-webp-optimizer)

### Interesse in ontwikkeling?

[Bekijk de code](https://plugins.trac.wordpress.org/browser/lehmannlabs-webp-optimizer/),
haal de [SVN repository](https://plugins.svn.wordpress.org/lehmannlabs-webp-optimizer/)
op, of abonneer je op het [ontwikkellog](https://plugins.trac.wordpress.org/log/lehmannlabs-webp-optimizer/)
via [RSS](https://plugins.trac.wordpress.org/log/lehmannlabs-webp-optimizer/?limit=100&mode=stop_on_copy&format=rss).

## Changelog

#### 1.0.0

 * Initial release
 * Upload optimization with backup and optional resize
 * WebP generation for full and intermediate sizes
 * Picture and direct output modes
 * Batch scan/optimize, restore, and delete WebP tools
 * Progress UI with status and remaining preview
 * Single media restore action
 * Backup cleanup button in settings
 * Site Health WebP support test

## Meta

 *  Versie **1.0.0**
 *  Laatst geüpdatet **1 maand geleden**
 *  Actieve installaties **Minder dan 10**
 *  WordPress versie ** 6.2 of nieuwer **
 *  Getest t/m **6.9.4**
 *  PHP versie ** 7.4 of nieuwer **
 *  Taal
 * [English (US)](https://wordpress.org/plugins/lehmannlabs-webp-optimizer/)
 * Tags
 * [elementor](https://nl.wordpress.org/plugins/tags/elementor/)[images](https://nl.wordpress.org/plugins/tags/images/)
   [optimization](https://nl.wordpress.org/plugins/tags/optimization/)[performance](https://nl.wordpress.org/plugins/tags/performance/)
   [webp](https://nl.wordpress.org/plugins/tags/webp/)
 *  [Geavanceerde weergave](https://nl.wordpress.org/plugins/lehmannlabs-webp-optimizer/advanced/)

## Waarderingen

Er zijn nog geen beoordelingen ingediend.

[Your review](https://wordpress.org/support/plugin/lehmannlabs-webp-optimizer/reviews/#new-post)

[Bekijk alle beoordelingen](https://wordpress.org/support/plugin/lehmannlabs-webp-optimizer/reviews/)

## Bijdragers

 *   [ lehmannlabs ](https://profiles.wordpress.org/lehmannlabs/)

## Ondersteuning

Iets te melden? Hulp nodig?

 [Het supportforum bekijken](https://wordpress.org/support/plugin/lehmannlabs-webp-optimizer/)