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I am looking for a way to colorize images like on this page:

http://pinetools.com/colorize-image

You have an image with transparency, then the remaining pixels are converted to the specified color. Notice: half colored pixels as well are only colored half or with opacity 0.5. So it does not look ugly or pixelated.

enter image description here

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The colorizing website does actually a complex job. It saves the transparency ie.the alpha values stay unchanged, but the new color is an adjustable mix of original color and selected new color.

Photoshop has got a very simple to use method in another answer. Paint.NET hasn't layer styles, so the proposed method is not available there.

For Paint.NET there are available several colorizing plugins. I haven't tried all of them, only a few. Those are made for adjusting a selectable color range (=change hue, saturation, brightness or transparency). But anyway, the job can be done with them, too. An example:

A random multicolour image with transparency:

enter image description here

Duplicate the image layer and make the copy 50% grey. Use the curves adjustment in RGB-mode:

enter image description here

If no mixing with the original is needed, there's no need to make a copy. Make the original layer grey.

Colorize the grey with a plugin:

enter image description here

Plugin = TR's ColorizerHMS

Adjust the transparency of the colorized layer to define the mix (not asked, but surprising effects are available by changing the blending mode - well worth to try!)

enter image description here

Finally merge the layers if you want to fix the effect to non-adjustable.

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In photoshop double click the image layer and apply color overlay. That's it.

  • A right answer, but quite impossible for beginners without a couple of screenshots. Still worth of+1. – user287001 Dec 22 '17 at 23:00
  • I think it is the function symbol at the bottom right fx – Toskan Dec 23 '17 at 2:04
  • @Toskan That's ok. After selecting Color Overlay, you can select the color and mix. – user287001 Dec 23 '17 at 8:07

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