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Canvas borders are not supported in color mode except RGB

Explorer ,
Feb 03, 2025 Feb 03, 2025

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Canvas borders are not supported in other color modes except rgb mode.

I usually work with cmyk, so I make the background white and it's so inconvenient to see the image in advance.

I checked the symptoms on several computers and someone said they don't have these symptoms.
Can you give me 5 seconds to test it for me? Is there a computer that develops similar symptoms?

I use the latest version of Windows 10 and Photoshop. I asked the customer center about this issue twice and Adobe confirmed it, but it was not reflected in the update.

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11 Comments
Community Expert ,
Feb 03, 2025 Feb 03, 2025

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Start by telling us exactly what you mean by "canvas border" and how you make it.

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Explorer ,
Feb 03, 2025 Feb 03, 2025

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1.png

 

2.png

 

Apart from the rgb mode, the dividing line on the canvas disappears.

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Community Expert ,
Feb 04, 2025 Feb 04, 2025

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I can reproduce the issue (Adobe Photoshop 26.3.0 on  Mac OS 14.6.1); the setting from Preferences > Interface > Border does only seem to apply to RGB images. 

 

But … 

If the work is print-oriented I would discourage using a white background. 

The second lightest Color Theme and a light gray background should be fine. 

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Community Expert ,
Feb 04, 2025 Feb 04, 2025

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OK, that's the on screen canvas border, not part of the image.

 

And yes, you're right. It does disappear when you convert to CMYK. I have no idea why...

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Explorer ,
Feb 04, 2025 Feb 04, 2025

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Only RGB mode supports boundaries. Is it verrrrry hard to support boundaries in other modes?

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Explorer ,
Feb 04, 2025 Feb 04, 2025

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I want to know how my output looks when printed on white paper. Boundaries are supported in rgb mode, is there a reason why not in other modes?

 

There is a problem that other operating systems are reproduced too, and someone says this is no problem.

I think he's lying.

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Community Expert ,
Feb 04, 2025 Feb 04, 2025

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»Boundaries are supported in rgb mode, is there a reason why not in other modes?«

None comes to mind, that’s why I added my vote to the Bug Report. 

 

»There is a problem that other operating systems are reproduced too, and someone says this is no problem.

I think he's lying.«

I explicitly mentioned that I can reproduce the issue on Mac, so who said what exactly? 

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New Here ,
Feb 04, 2025 Feb 04, 2025

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If you're trying to add canvas borders in Adobe Photoshop but it's not working, it's likely because your document is in a color mode other than RGB (such as CMYK, Grayscale, or Indexed Color). Photoshop only supports canvas borders in RGB mode.

How to Fix It:

  1. Check Your Color Mode – Go to Image > Mode and see if it's set to something other than RGB.
  2. Convert to RGB – If it's in CMYK, Grayscale, or another mode, select RGB Color to enable canvas borders.
  3. Retry Adding Borders – Now, go to Image > Canvas Size, select a border color, and it should work properly.

If you're working on a print project that requires CMYK, you can switch back after applying the border.
I faced a similar problem while wokring for my website Magis tv para pc , i followed the same pattern and it worked for me.  Hope this helps! 😊 

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Explorer ,
Feb 04, 2025 Feb 04, 2025

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The post together on the kr community says someone can't recreate it.

 

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Explorer ,
Feb 04, 2025 Feb 04, 2025

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It's an alternative, but not a workaround. I often use the cmyk mode and customized a white background like print paper. I can't even do the cropping properly. 😕

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Community Expert ,
Feb 04, 2025 Feb 04, 2025

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quote

Photoshop only supports canvas borders in RGB mode.

Working in RGB mainly (and with a gray background anyway) it affects me little but I understand the original poster’s consternation about the distinction as it does not seem technically unavoidable while offering no apparent benefit. 

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