Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Given a pixel in an image imported from a png file, how can I get the alpha value of the pixel with the GIMP? If this is not possible, what software can I use to achieve this (OS: Linux)?

share|improve this question
up vote 26 down vote accepted

Hold shift while using the color picker.

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .