Replace black background with a transparent background


Question

enter image description here

How can I add transparent background on this image instead of black background, but I also would like to keep the partial transparency effect on some of the particles and particles borders.

Could you please share actions in either photoshop or gimp, thanks.

1
12
6/25/2012 3:38:00 PM

Accepted Answer

Greenfish Icon Editor Pro has this functionality out of the box. It is a function called "Remove Matte", where you just specify the color component you want to be replaced with transparency. In your case black.

This is the result:

Red thing

Greenfish Icon Editor Pro is totally free of charge. It is by far the best free icon editor I have ever tried. From the description of the product on the download site:

GFIE Pro is a powerful icon, cursor, animation and icon library editor. Layer support with advanced selection handling makes it a really professional and unique freeware tool for designing small pixelgraphic images. GFIE offers high-quality filters like Bevel, Drop Shadow and Glow; supports editing animated cursors and managing icon libraries. It's lightweight (< 1.8 MB unzipped) and also has a portable version - just unpack it to your USB drive and use it anywhere. A clean, customizable, multilanguage user interface makes it really easy to learn and use.

11
1/12/2014 5:34:00 PM

And just to be complete, here is the GIMP answer.

Just do:

  • Colors > Color to Alpha ...
  • select Black
  • Click OK

if "Color to Alpha ..." is greyed out you need to set the Image mode to something else than indexed, e.g.:

  • Image > Mode > RGB

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