FastStone Photo Resizer - Convert and Rename images in batch mode Support JPEG, BMP, GIF, PNG, TIFF and JPEG2000
PhotoBulk - PhotoBulk is a bulk image editor for Mac that was created for the best experience of batch editing. With this image editing software for macOS you can add watermarks, optimize and resize pictures, convert images or rename photos in bulk.
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Fast Image Resizer - adionSoft Fast Image Resizer is a small tool to quickly resize a batch of pictures. Features
Batch Photo Face - Automatically recognize faces in 1000s of photos and process images based on face detection results!