Mix Image Color Channels Online
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What you can expect
Remix the red, green, and blue channels with a full 3x3 matrix plus offsets. Swap channels, build custom black-and-white mixes, or dial in cross-processed color science.
Related tools
More BrushCue tools that fit this workflow.
Adjust Channels
Add or subtract from the red, green, and blue channels independently to shift the image’s color balance.
Linear Transform
Multiply the RGBA values of a pixel by a 4×4 matrix with this browser-based tool to apply precise, linear color transformations such as channel mixing, color correction, and custom effects, all without changing image geometry.
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Online Image Color Adjustment Tools
→Frequently asked questions
- How do I swap the red and blue channels?
- Set the red row to 0, 0, 1 and the blue row to 1, 0, 0, leaving green at 0, 1, 0. Reds render blue and vice versa.
- What do the matrix rows do?
- Each output channel is a weighted sum of the input channels plus its offset. The top row builds the new red, middle green, bottom blue.
- How is this different from Adjust Channels?
- Adjust Channels only adds a flat offset per channel. The mixer cross-feeds channels into each other, like Photoshop's Channel Mixer.
- What file formats can I export?
- You can export as PNG, JPEG, WebP, TIFF, BMP, or HEIC.
- Is this tool free to use?
- Yes — completely free, no account needed. Your images are processed entirely in your browser and never uploaded to a server. Downloads have no watermarks.
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