gimp - Batch Processing

I need to batch process 100's of images in one go, these are largely product photographs for my e-commerce store & the task are repetitive such as white background , image resizing,and compressing .

Currently , I use:

• GIMP - White Background ( Couldn't batch Process for white background)


• Faststone - for Batch Resizing

I find this laborious & time consuming ? Is there a better way ..Do recommend