Best webp conversion plugins for WordPress
The most popular webp conversion plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Pixellize Image Optimizer leads with 200+ active installs, ahead of Symmetria Smart Images (30+) and Lightning Load Speed Optimization (fewer than 10). All 3 plugins tagged “webp conversion” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
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Top 3 webp conversion plugins
- 1.
Pixellize Image OptimizerThe most installed webp conversion plugin, with 200+ active installs. Only 3 reviews so far, updated 2 months ago.
- 2.
Symmetria Smart Images30+ active installs. No reviews yet, updated 3 days ago.
- 3.
Lightning Load Speed OptimizationFewer than 10 active installs. No reviews yet, updated 1 month ago.
All 3 plugins tagged “webp conversion”
Pixellize Image Optimizer
Up in the last 7 days:44#12,463by Pixellize2 months ago
🚀 Automatically convert images to WebP format in WordPress and improve website speed, performance, and SEO — without any manual work.
- Installs
- 200+
- Rating
- 5.0(3)
- Downloads
- 7/day
Symmetria Smart Images
Down in the last 7 days:987#23,267by Symmetria Software3 days ago
Effortless alt-text, captions, smart crops and optimization by AI while you upload images.
- Installs
- 30+
- Rating
- –
- Downloads
- 22/day
Lightning Load Speed Optimization
Up in the last 7 days:2,588#59,517by Passionate Brains1 month ago
This plugin will significantly boost your WordPress website’s performance by converting existing images to WebP format and enabling lazy loading.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day