"Crop Thumbnails" made it easy to get exacly that specific image-detail you want to show. Crop your images the simple way.
Regenerate or adjust thumbnail sizes from original source images within a WordPress blog.
Tool for mass generation of Wordpress posts thumbnails using the post images.
Adds multiple post thumbnails to a post type. If you've ever wanted more than one Featured Image on a post, this plugin is for you.
A simple, local image only, thumbnail generation script written in PHP
easy to make Thumbnail image in php using GD library
Directus Thumbnailer — Dynamic Thumbnail Generator
WordPress plugin for content-aware cropping of thumbnails.
phpThumb() - The PHP thumbnail generator