A very simple and secure image resizer. It adds dynamic resizing so you don't need to regenerate thumbnails when you install a new theme.
As of April 2026, Secure Image Resizer is a WordPress image plugin with 10 active installations and a 5/5 rating from 1 reviews. It has been downloaded 2.7K+ times in total. Requires WordPress 3.0+ and PHP false+. Available on WordPress.org since 2012. Last updated 13 years ago — may have compatibility concerns. Top alternative: Firelight Lightbox.
A lot of themes ship with Timthumb because it allows their users to start using the theme without rebuilding thumbnails.
Secure Image Resizer offers a far more secure alternative. It allows theme developers to rely on WordPress’ own image resizing functionality using add_image_size and get_the_post_thumbnail.
When get_the_post_thumbnail is called, Secure Image Resizer checks if the requested image size exists. If the image doesn’t exist it dynamically creates the resized version. It works in the background, with no front end functionality.
Theme developers can either bundle this plugin into their themes, or suggest that their users install it.
It also includes 2 functions so_resize_custom and so_resize_custom_html to do dynamic image resizing using Imagick. Great for theme dev…
| WordPress | 3.0+ requiredTested up to 3.4.2 |
| PHP | false+ required |
Initial release
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