Split a PNG into RGB Channels
Break an image into its individual colour channels — Red, Green, Blue, and the Alpha (transparency) channel — each saved as a separate grayscale PNG where brightness equals that channel's value. Drop a file and download all channels as a ZIP. It runs in your browser; nothing uploads.
Drop images here
Multiple files allowed · one ZIP per image
What each channel shows
- R / G / B — how much red, green or blue each pixel contains, rendered as gray: white means full intensity in that channel, black means none.
- A (alpha) — the transparency map: white where opaque, black where transparent.
Why split channels?
Channel separation is a staple of image analysis and retouching — isolating the red channel to work on skin tones, using a single channel as a mask, or diagnosing why a colour looks off. Because each channel is a plain grayscale PNG, you can edit it in any tool and recombine elsewhere.
FAQ
How do I separate an image into red, green and blue?
Drop it above and click Split — you get one grayscale PNG per channel (R, G, B, and Alpha), bundled in a ZIP. It's processed in your browser.
Why are the channels grayscale, not coloured?
A single channel only carries intensity, not colour, so grayscale is the accurate representation. It's the standard way channels are shown in image editors.
Part of: Work on one colour channel at a time
Split, look, then decide. Half of "the red is blown out" turns out to be the green channel once you actually see them separately.
- 1 Split RGB Three greyscale images, one per channel
- 2 Histogram Where each channel actually sits
- 3 Channel mixer Rebuild one channel out of the others
- 4 Extract alpha Pull the transparency out as its own image
- 5 Apply alpha mask Push a channel back in as transparency