Turn any color photo into a clean black and white image right in your browser. Choose between three classic conversion methods, perceptual luminance, average, and lightness, and adjust intensity and contrast for the exact look you want. No upload, instant download as PNG, JPG, or WebP.
Drag and drop or choose any color photo to convert.
Adjust contrast and brightness to fine-tune the look.
Click Download and save the black and white version as PNG.
Stripping color without controlling contrast produces a grey, lifeless result. The converter applies a balanced luminance curve that preserves tonal depth and gives photos a natural film-look quality.
Photographers use it for print portfolios, journalists for archival features, and family-album makers for classic memorial pieces.
The default Luminance method uses the standard ITU-R BT.601 weights, 0.299 R + 0.587 G + 0.114 B, which match how the human eye perceives brightness in the red, green, and blue channels. The result looks natural and balanced, with greens appearing brighter than blues, just like a classic black-and-white film photograph.
Pick the algorithm that fits your image. Luminance is the perceptually accurate default. Average, (R + G + B) / 3, gives a flatter, more neutral look. Lightness, (max + min) / 2, produces higher-contrast results that emphasize the brightest and darkest channels. Switch live and see the result update on the canvas instantly.
The Intensity slider blends between the original color image (0%) and full grayscale (100%), useful for stylized partial-color effects. The Contrast slider applies a -100 to +100 contrast adjustment using the standard formula F = (259 × (c + 255)) / (255 × (259 − c)) so darks get darker and lights get lighter without clipping.
Your image never leaves your device. The conversion uses the HTML5 Canvas API and runs every pixel transformation in your browser. No file is sent to a server, no account is needed, and nothing is stored. The downloaded PNG, JPG, or WebP is generated locally and saved directly to your device.
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Common questions about converting color images to black and white.
