If you want a full-featured photo editor with background removal, batch editing and animation tools, Pixlr is a good option. It includes Pixlr Editor for detailed editing, Pixlr Express for quick touch-ups, Pixlr Designer for templates and animations, and Remove bg for AI-powered background removal. Pixlr also has a Batch Editor for editing groups of photos. And it can create AI art, swap faces and apply a variety of filters.
Another option is Fotor, an all-in-one online photo editor. Fotor offers batch photo editing, AI background removal and object removal. It also can create AI art, replace objects and expand images. You can also create collages and export photos without a watermark, though you'll have to upgrade to Fotor Pro for more advanced features.
VanceAI is another option, especially if you need a lot of AI tools. It includes an AI Background Remover along with tools to upscale images, sharpen them, remove noise and convert them into cartoon or sketch styles. VanceAI can process groups of images and is geared for professionals who have a lot of photos to process.