Based on our record, PhotoBulk Lite seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Maybe try PhotoBulk, it's cheaper than full editing apps and does the kind of batch processing you mention although I'm not sure if it extends the image with a white background. Source: about 1 year ago
Ashampoo® Photo Optimizer - Ashampoo Photo Optimizer 8 enhances your photos at the click of a button! The program fully automatically adjusts colors, contrasts and exposure settings to perfection for individual images or entire collections.
Watermarker - Watermarker is software that manual and automatically stamps a watermark over your images.
TinyPNG - Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!
Aoao Watermark for Photo - Aoao Watermark for Photo is the best photo watermark software for you to add text/image watermark. This image protection solution provides batch watermarking mode and enables to set photo frame, resize photo, crop picture and batch rename photos.
iLoveIMG - iLoveIMG is one of most powerful solution that comes with all the major tool you cloud want to edit images in bulk.
bulkWaterMark - bulkWaterMark is a batch photo watermarking software for Microsoft Windows.