GitHub - wvanbergen/chunky_png: Read/write access to PNG images in pure Ruby.Decodes any image that the PNG standard allows. This includes all standard color modes, all bit depths, all transparency, and interlacing and filtering options. Encodes images supports all color modes (true color, grayscale, and indexed) and transparency for all these color modes. The best color mode will be chosen automatically, based on the amount of used colors. R/W access to the image's pixels
