Black & White Threshold
Convert an image to pure black and white.
Black & White Threshold is a free, browser-based tool on Toolery. Convert an image to pure black and white. Everything runs locally on your device, so it's fast and completely private — no uploads, no queues, and no sign-up to try it.
Black & White Threshold — FAQ
Is Black & White Threshold free to use?
Yes. Black & White Threshold is completely free on Toolery — no watermarks and no sign-up required to try it.
Is Black & White Threshold private — do my files stay on my device?
Yes. Black & White Threshold runs entirely in your browser. Your files and input are processed on your own device and never uploaded to a server, so nothing is stored, seen, or shared.
How do I use Black & White Threshold?
Convert an image to pure black and white. Open the tool, add your file or input, and get the result instantly — it all happens on your device.
Does Black & White Threshold reduce image quality?
Black & White Threshold preserves as much quality as the format allows and gives you control where it applies. It works on your original file directly in the browser, so there's no extra loss from uploading and re-downloading.