Here are 2 workflows that contain the node easy imageToMask:

1.

Size: 39704 bytes

URL: https://github.com/yolain/ComfyUI-Yolain-Workflows/blob/7c3af2bae860dd32d46dcea6e1012b6a57005d50/workflows/2_advanced/2-3layerDiffuse/2-3layerdiffuse%E9%80%8F%E6%98%8E%E5%9B%BE.json

2.

Size: 53461 bytes

URL: https://github.com/xuhongming251/ComfyUI-MuseTalkUtils/blob/bec982049467789ead851b8f185e5a2449b2743c/workflow/musetalk%20flow.json