RGBA Splitter/Combiner
Locally split a PNG into its individual Red, Green, Blue and Alpha channel images
Drag & drop a PNG image here
In Luminance mode, each channel is exported as a grayscale PNG, where pixel brightness represents that channel’s intensity (white = 255, black = 0). In Basic mode, the Red, Green and Blue channels are exported using their own colour instead of grayscale. The Alpha channel is always exported in grayscale where image is fully opaque and black where it’s fully transparent. Processing happens entirely in your browser.
Recombine Channels
Drop images into each slot below and merge them back into a single RGBA PNG
Leave a slot empty to default that channel: Red, Green and Blue default to 0 (black) and Alpha defaults to 255 (fully opaque). In Luminance mode, colour images dropped into a slot are converted to grayscale using their luminance before being used as a channel. In Basic mode, the Red, Green and Blue slots use each image’s own R, G or B channel value directly instead of luminance; the Alpha slot always uses luminance. If your channel images are different sizes, they’re scaled to match the first image you add. Processing happens entirely in your browser.