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I have an image where a certain region must be 100% transparent. However, another tool reports that not all pixels are completely transparent.

How can I check if a certain pixes is completely transparent or 99% only?

PS. I am creating a nine-patch image and it seems that a shadow is overlapping to the marginal 1px line and I can't figure out where. I cannot add another 1px to height/width, I just need to know how to check transparency level

EDIT

It seems that color picker tool in Gimp can show alpha values as well, but I cannot find where it shows these alpha values. all I see are x and y coordinates. Look at the image

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1 Answer 1

up vote 4 down vote accepted

Use the color picker tool an check the alpha level on the color wheel (or whatever you use)

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Great advise. Any such tool in GIMP??? –  JoeM May 14 '12 at 15:22
2  
It's the same tool in GIMP. Check the Use Info Window checkbox as well. In the info box, it'll tell you the alpha value for the selected pixel. –  MBraedley May 14 '12 at 15:46
    
@MBraedley I do not see any info on alpha value. I pick the Color Picker tool and hover over the image, but all I get is X and Y coordinates. Look at the images attached in the main message. –  JoeM May 15 '12 at 7:42
3  
I found it. In GIMP you have to keep pressed Shift button and then click and Info windows will pop up. –  JoeM May 15 '12 at 7:45

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