Reduce Colors

Reduce image color palettes to a specified number of colors, creating posterized effects while dramatically reducing file sizes. Specify exactly how many colors to retain—from stark 2-color output to 256-color palettes suitable for indexed PNG and GIF formats.

Color quantization algorithms analyze your image and select the optimal palette of N colors to best represent the original. As color count decreases, the image becomes increasingly stylized with visible color banding, while file sizes shrink substantially. Different quantization algorithms (median cut, octree, k-means) produce subtly different results; dithering options can smooth harsh color transitions by using dot patterns to simulate intermediate colors.

Graphic designers creating posterized artwork effects achieve stylized visual treatments. Screen printing and merchandise producers prepare artwork for limited-color reproduction processes. GIF creators converting photographs to the format's 256-color maximum optimize quality within the constraint. Retro and vintage aesthetic projects achieve period-appropriate color limitations. Low-bandwidth optimization efforts reduce file sizes dramatically when visual stylization is acceptable. Anyone working with color-limited output formats or seeking stylized posterization effects will find palette reduction essential.