WebP Express is a WordPress plugin that automatically converts JPEG and PNG images to the WebP format, reducing file sizes by 25 to 50 percent without visible quality loss. It supports two delivery methods: the alter HTML method rewrites image tags, and the redirection method serves WebP images via server rules. The plugin can convert images in bulk, handle the entire media library, and work with CDNs. The Premium version adds AVIF support and custom quality settings. WebP Express is a focused alternative to Imagify for users who only need WebP conversion without compression features.
Competitive Features
- Automatic WebP conversion — convert JPEG and PNG images to WebP format on upload or in bulk
- Alter HTML delivery — rewrite image tags in HTML to serve WebP versions to compatible browsers
- Redirection delivery — serve WebP images via server rewrite rules without changing HTML
- Bulk conversion — convert all images in the media library with progress tracking
- AVIF support (Premium) — convert images to AVIF format for even smaller file sizes
- Custom quality settings — set conversion quality per image type for optimal size and quality
- CDN support — works with Cloudflare and other CDNs for WebP delivery
- Browser detection — serve original JPEG/PNG to browsers that do not support WebP
Key Features
- Media library integration — convert images directly from the WordPress media library
- Bulk conversion — process all existing images with a single click
- Conversion log — view detailed logs of converted images and errors
- Force conversion — re-convert images that were previously converted
- Image statistics — view total savings from WebP conversion
- Cache integration — compatible with WP Rocket, W3 Total Cache, and LiteSpeed Cache
- Exclude images — skip specific images or folders from conversion
- Server configuration — auto-detect server capabilities for optimal delivery method
Comparison with Competitors
WebP Express Premium vs Imagify
| Feature | WebP Express Premium | Imagify |
|---|---|---|
| WebP conversion | Yes | Yes |
| AVIF conversion | Premium | Yes |
| Image compression | No | Yes |
| Bulk optimization | Yes | Yes |
| Quality settings | Custom | Preset levels |
| CDN support | Yes | Yes |
WebP Express Premium vs ShortPixel
| Feature | WebP Express Premium | ShortPixel |
|---|---|---|
| WebP conversion | Yes | Yes |
| AVIF conversion | Premium | Yes |
| Compression types | WebP only | Lossy, Lossless, Glossy |
| Bulk processing | Yes | Yes |
| Image optimization | No | Yes |
| Credit system | Unlimited | Monthly credits |
Recommended Stack — pair WebP Express Premium with caching plugins like WP Rocket to combine WebP image delivery with page caching, minification, and lazy loading for maximum site speed.
Official Changelog
Version 0.25.15
Release Date: August 2026
- Fix: Compatibility with PHP 8.5.
- Improvement: Bulk conversion performance.
- Fix: Alter HTML method for cached pages.
Version 0.25.14
Release Date: July 2026
- New: AVIF conversion support (Premium).
- Improvement: Redirection method for LiteSpeed servers.
- Fix: Media library conversion for large images.
Frequently Asked Questions
Does WebP Express reduce image quality?
WebP achieves 25 to 50 percent file size reduction with minimal quality loss. The plugin allows you to adjust conversion quality to balance size and quality.
How does WebP Express serve WebP images?
It supports two methods: alter HTML rewrites image tags, and redirection serves WebP via server rules. The alter HTML method is more compatible with CDNs.
Is WebP Express compatible with CDNs?
Yes, the alter HTML method works with Cloudflare and other CDNs. The plugin also includes settings for CDN URL rewriting.
Does WebP Express support AVIF?
Yes, the Premium version supports AVIF conversion for even smaller file sizes compared to WebP.
Can I convert existing images in bulk?
Yes, the plugin includes bulk conversion that processes all existing images in the media library with progress tracking.
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