IrfanView - IrfanView ... one of the most popular viewers worldwide.

ImBatch - ImBatch is a batch image processor with a nice graphical user interface.

Retrobatch - Retrobatch is a unique application for automating actions to tens, hundreds, and even thousands of images at the same time

DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.

Irix HDR - Irix HDR is a photo-editing application that allows its users to perform an action on images by using highly trained artificial intelligence (AI) models.

Ralpha Image Resizer - High-speed image batch conversion tool