Hammy speeds up your website by generating and serving resized images for your content area depending on content width.
As of April 2026, Hammy is a WordPress image plugin with 200 active installations and a 3.3/5 rating from 16 reviews. It has been downloaded 66K+ times in total. Requires WordPress 3.5+ and PHP false+. Available on WordPress.org since 2012. Last updated 12 years ago — may have compatibility concerns. Top alternative: Firelight Lightbox.
Hammy takes your regular content images (only within posts and pages, not custom post types) and regenerates a number of smaller sized images. When a person visits your website, it then automatically provides them with the most appropriate image (or the smallest one possible). This makes for a better experience, especially on mobile. This uses the new WP 3.5 image code.
Yes! (the only exception being themes with no standard posts or pages)
When activated, the <img> tag is replaced by the <figure> tag, and the alternate image sizes are provided in a way that only jQuery can access/load. If jQuery isn’t available, it falls back to the regular image you had there in the first place.
It also takes on any classes or alt…
| WordPress | 3.5+ requiredTested up to 3.7.41 |
| PHP | false+ required |
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.