Batch Black & White Converter

Quickly convert all colors in an image to just black and white or custom two-tone styles.

Drag & Drop Images Here

Supports PNG, JPG, WEBP and more. Max 10MB per file.

Or try with these examples

High-Quality B&W Conversion

Professional-grade image processing algorithms directly in your browser. Perfect for artistic effects, print preparation, and web optimization.

Continuous Tones

Uses smart RGB quantization to create smooth transitions between your selected colors. Perfect for high-contrast artistic photos.

Dithering Algorithms

Choose from Atkinson, Floyd-Steinberg, and more. Dithering simulates gradients using dot density, ideal for vintage or retro looks.

Custom Two-Tone

Not just black and white! Choose any two colors to create unique duotone effects for branding or artistic projects.

Frequently Asked Questions

What is Dithering?

Dithering is a technique used to simulate colors and gradients that aren't available in a limited color palette. In black and white conversion, it uses varying patterns of black and white dots to create the illusion of gray levels.

How does Continuous Tone work?

Continuous tone conversion uses a threshold value. Pixels brighter than the threshold become one color, and darker pixels become the other. This creates sharp, clean boundaries between the two colors.

Is my data secure?

Yes! All processing happens locally in your browser. Your images are never uploaded to our servers, ensuring 100% privacy and security.

Can I batch process images?

Absolutely. You can upload multiple images at once and apply the same settings to all of them using the Batch Apply feature.