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Extract the Green Channel

Show only the green channel of an image as a greyscale map.

or drag it here

image/* · up to 40 MB

Processed in your browser

Fill in the form and press “Process image” to see the result here.

How to use it

  1. 1Select your image, or drag and drop it onto the upload area.
  2. 2Adjust the options if you need something other than the defaults.
  3. 3Press the button. The image is processed on your device - nothing is uploaded.
  4. 4Download the result, or drop in another file to do it again.

About the Extract the Green Channel

Every pixel is replaced by its green value repeated across all three channels, which renders that channel as a greyscale image.

Channel separation is used in print preparation, in forensics to spot edits that affected one channel, and in photography - the red channel often holds the cleanest skin tones, the green channel the most detail.

Questions people ask

Is your image uploaded to a server?

No. This tool runs entirely in your browser using standard web APIs, so your image never leaves your device. You can confirm it by opening your browser's network panel while the tool runs, or by disconnecting from the internet after the page has loaded.

Is it free, and do I need an account?

Yes, it is free, and there is no account, no sign-up and no watermark on the result. The project is funded by optional donations.