True 1-bit contrast — only pure black and pure white. Pick a photo and dial the balance.
or drag & drop / paste an image here
Darker ← → Lighter
Less grainy and rough-looking when turned up. 0 is off.
This converts any photo into true 1-bit black & white — every pixel becomes either pure black or pure white, no shades of grey. It's different from a normal grayscale filter, which keeps a full range of tones. "Balance" shifts the cutoff point darker or lighter, "Smoothing" softens grain before that cutoff is applied, and you can crop, rotate or invert the result before downloading.
It's useful for poster-style portraits, stencil and laser-cutting templates, high-contrast prints, comic/halftone-style art, and scanned documents you want to clean up.
Your photo is processed entirely in your browser — nothing is ever uploaded to a server.