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I have a series of images with a 1px border included in the picture. I need to get rid of that border. The logical route seemed to be Select > All and then Select > Modify > Contract... by 1 px. Unfortunately, when all pixels in a layer are selected, Photoshop (CS6 in my case) greys out all Select > Modify option but Border.... This seems to be an ancient 'bug', introduced in Ps CS3.

How can I work around this 'bug', preferably in a way that allows me to automate the process in an action?

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2 Answers 2

up vote 1 down vote accepted

What about the Trim feature? If the pixel border around the images is a solid colour or transparent Trim would work. You might have to play around with it a bit, but you should be able to use it to do what you are asking.

Image > Trim...

enter image description here

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Useful and the superior option in case the border is a single colour. Unfortunately, there's slight variations. –  Vincent Jun 11 at 16:05
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What about an action to retract the canvas size by 1px? –  GoofyMonkey Jun 11 at 16:06

A quick workaround is to use the one Modify option still available: Border. Border for the amount of pixels you want to trim off the image, reverse the selection (Select > Inverse or Shift+Ctrl/Option+I) and Image > Crop.

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This almost works, but it doesn't give a solid 1px line, it seems to be slightly anti-aliased. –  Richard Tan Oct 24 at 3:12

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