Image → Black & White
Turn an image into pure black and white — great for scanned documents, stencils, logos and retro dithering.
Drop your image here
or click to choose a file — JPG, PNG, WebP, GIF, BMP, SVG, HEIC, TIFF or AVIF
● Your files are processed locally in your browser and are not uploaded to our servers.
How it works
Each pixel becomes black if its brightness is below the threshold and white otherwise. The automatic mode uses Otsu's method, which picks the threshold that best separates dark and light areas — ideal for scanned text. Dithering spreads the rounding error to neighbouring pixels so gradients become patterns of dots, like a newspaper photo.
FAQ
Grayscale vs black & white?
Grayscale has 256 shades of gray; black & white has exactly two colors.
Best settings for a scanned document?
Turn on automatic threshold and leave dithering off.