A simple batch watermark generator. Made for my needs, change it up to make it work for you.
Made for photos: 1536x2040 in size with a watermark: 1536x1024.
Adjust watermark scale in both nodes so it fits your size of images!
How to use:

1. Select folder with photos you want to watermark

2. Select folder where you want to save your watermarked photos (example: C:\AI\ComfyUI_windows_portable\ComfyUI\output\watermarked)

3. Press play

Very simple to use.