WebP Slim
Lighter images — faster site.
Instant delivery: license key + download right after payment.
Version 1.0.0 · updates delivered automatically
About
WebP shrinks images by 25–35% with no visible difference. WebP Slim does it invisibly: new uploads are converted automatically using Imagick or GD — whatever your host has.
The frontend never breaks: the original stays, images in content are wrapped in picture markup — modern browsers get WebP, old ones see the original. Every saved byte is counted in the media library, and rollback is one click.
The free version bulk-converts 50 images per month, one at a time. Pro removes the limits: batches of 20, all thumbnail sizes, quality 10–100 and AVIF copies when your PHP supports it.
What it does
- Automatic conversion on upload
- Picture markup with original fallback
- Saved-bytes counter in the media library
- Free: 50 conversions per month
- Pro: unlimited, batches of 20, AVIF
Free vs Pro
| Free | Pro | |
|---|---|---|
| Conversion on upload | Yes | Yes |
| Bulk conversion | 50/mo | Unlimited |
| All thumbnail sizes | - | Yes |
| AVIF | - | Yes |
FAQ
Will old posts break?
No: originals stay, images are wrapped in picture markup with a fallback.
What about the conversion engine?
Imagick or GD — whatever the host already has; AVIF needs imageavif support.
Can I roll back?
Yes: WebP copies are deleted together with their metadata in one click.
Installation & uninstall
Free version
- Download the zip archive with the "Download free" button above.
- In your WordPress admin: Plugins → Add New → Upload Plugin.
- Pick the downloaded zip, click "Install Now", then "Activate".
- The plugin's menu appears in wp-admin — configure it to your liking.
Pro version
- After payment, download the Pro archive from your order page (the link is also emailed).
- Install Pro like any plugin: Plugins → Add New → Upload Plugin → Activate.
- The free version must be installed and active — Pro sits on top as a companion.
- Enter the license key on the plugin's Pro settings page.
Uninstall
- Plugins → find the plugin in the list → click "Deactivate".
- Then click "Delete" — the plugin and all its data (tables, settings, logs) are removed completely.
- The Pro companion uninstalls the same way, independently; the free version keeps working.
Every plugin we ship passes a clean-uninstall test: after "Delete" no tables or leftover settings remain in the database.
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