Participant

Answered

Saving channels to png

Forum|Forum|7 years ago
September 29, 2018
3 replies
8849 views

How do I save RGB specific channels as a png? Whenever I try to save the image with channels disabled the file saves with all channels enabled. If I switch from RGB I lose the option to save as a png.

Correct answer D Fosse

Target the channel you want - just click on it in the channels panel - and copy it into a new file. Save/Export that as PNG.

Target channel. Ctrl A - ctrl C - ctrl N - ctrl V - ctrl E. Save. Do that a few times and it sticks...

Yeah, Calculations works too.

cjl6892274Author

Participant

Interesting but that doesn't appear to work. The image loses all it's color. Tried it using both Blue and Green and then merging the 2 documents but it just came out as grey scale.

Fosse's method worked though.

Thanks to both of you for responding.

D Fosse

Community Expert

cjl6892274 wrote
The image loses all it's color.

Yes, as Dave said, that's what a single channel is. It's just a grayscale image. If you expect the green channel to be green, then you misunderstood.

And if you then got my method to "work" something is very wrong

cjl6892274Author

Participant

Fosse, not sure why your method worked, maybe because 2 channels were copied it maintained both those selected channels when pasting into the new image and since it was more then 1 channel it didn't switch to grey scale.

I tried using the calculation method with image 1 using 1 channel and image 2 using a different channel but that still left me with a grey scale image.

I had also previously tried adjusting the hue but the result was different from just disabling 1 of the channels although it likely would have worked if I'd made further adjustments to get the right colors and brightness.

Thanks again.

D Fosse

Correct answer

Community Expert

Target the channel you want - just click on it in the channels panel - and copy it into a new file. Save/Export that as PNG.

Target channel. Ctrl A - ctrl C - ctrl N - ctrl V - ctrl E. Save. Do that a few times and it sticks...

Yeah, Calculations works too.

davescm

Community Expert

Hi

This is one way:

Use Image >Calculations to create a new document with just the required channel (e.g. here I've shown the red channel).

In the new document change the Image mode from multichannel to grayscale

Save As png

Dave

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