A free application that helps you manipulate images in bulk. You can define ‘watch-folders’ and output folders and set edit tasks like cropping, watermarking, colour correction etc. You can also add tasks in sequence for the same batch.
You can let the application to work in the background while you are working on other tasks.
Download this free application if you got thousands of images to manipulate.
An alternative for this on the Windows OS is the FastStone Photo Resizer.
Download Link: https://www.xnview.com/en/xnconvert/