1
EWWW Image Optimizer Included
Unlimited image optimization in the free local mode.
94feature score
WordPress Image Optimization Plugins with Generous free tier
Free version optimises unlimited images, or a large monthly quota. 4 of the 8 plugins we track include it.
2
Smush Included
Unlimited images in the free version, subject to the 5MB per-image cap.
92feature score
3
Optimole Partial
Unlimited images on the free plan, but only for up to 2,000 visits a month.
77feature score
4
Converter for Media Included
No quota on free WebP conversions since they run locally.
74feature score