Convert multiple images to Pure Black and White (threshold, NOT grayscale) | Online editor → MoonPic

Also you can go to standard black & white image converter (grayscale).

Choose files or drag it here
(jpg, jpeg, png, gif | 1 file 12 MB max | all files 100 MB max)

Uploaded files (delete all):

JPEG and PNG quality (1-100)

100 - best quality (biggest file size)