Making png images transparent using paint.net

Something I needed recently which I've wanted to blog. It's fairly simple, and also documented elsewhere online, but as with most things I do technical blog wise, explanations work better with screenshots. Example image, "tick.png" with a non-transparent white background: tick If you don't have it already, download and install paint.net. It is great and is to MS Paint what Notepad++ is to MS Notepad, though you need Windows 7 or above as a minimum system requirement: http://www.dotpdn.com/downloads/pdn.html Fire up paint.net and open the image: paintdotnet1 Select the magic wand tool. You may need to adjust the tolerance setting shown, but for this example I kept it on 50%. Then click anywhere on the image's white background: paintdotnet2 Use Erase Selection from the drop down menu or just hit the Delete button: paintdotnet3 So that what you end up with is your original tick symbol minus the white background: paintdotnet4

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