Square Thumbnails (square-thumbnails) free WordPress plugin

Square Thumbails is a plugin for creating square thumbnails from images, without cropping them. It is like when you set background image in CSS to contain.

A plugin for creating square thumbnails from images, without cropping them. If the plugin is installed and activated, when you upload an image it will automatically create square thumbnails, for all sizes.
If you use a plugin to regenerate the thumbnails, the plugin will create square thumbanails for all existing images.
We needed this plugin to have square images not cropped for products in Woocommerce.