Image to Grayscale
Convert any color image to black-and-white grayscale. Files never leave your browser.
Drop an image or click to browse
PNG, JPG, WebP — processed entirely in your browser
Convert images to grayscale online — free
Uses the standard luminance formula (0.299R + 0.587G + 0.114B) that matches human perception — greens appear lighter than blues at equal intensity. This is the same algorithm used in most professional tools. For other effects, try Image Color Inverter or Brightness & Contrast.
Private & free — this tool runs entirely in your browser.
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