RGB Channel Splitter
Separate red, green, blue and alpha channels
Runs in your browser. Files never leave your device.
How to use RGB Channel Splitter
- Choose or drop an image, or paste one from your clipboard.
- Adjust the settings and check the preview.
- Download the result.
About this tool
Split an image into its red, green, blue and alpha channels. Each channel is shown as a grayscale image, where brighter means more of that color, or in its own color, and can be downloaded as a full-size PNG.
Channel images are useful for masks, texture maps, checking noise and studying how a photo is built.
- Works on your device. Nothing is uploaded.
- Free, with no sign-up and no watermark.
- No limits on file count or size beyond what your device can handle.
Questions and answers
What does the alpha channel show?
White areas are fully opaque and black areas fully transparent. Images without transparency have a completely white alpha channel.
Can I download all channels at once?
Yes. Download all four channels together as a ZIP of PNG images.
Is RGB Channel Splitter free?
Yes. Every tool on ImgImage is free to use, with no sign-up, no watermark and no limit on how many files you process.
Are my files uploaded anywhere?
No. Your files are processed by your own browser and never leave your device. Nothing you open here is sent to a server.
Does it work on my phone?
Yes. It works in any modern browser on phones, tablets and computers. Large files are processed faster on a computer.