So, I created myself a nice little 128 x 128 png, with a nice bit of alpha transparency going on in the background, and I threw it at img2icns which happily created me a brand new icns file. Instead, I grabbed myself a copy of img2icns, a little application that you simply drag an image onto which is then spat back out again at you in icns form. For my purposes though, Iconographer turned out to be more than I needed. This collection isn’t editable in a normal image editor – instead you need to use something special such as Iconographer. As well as the 128 x 128 version of the icon you can also provide extra, different sized, icons although in this instance I’ll only be talking about providing the biggest 128 x 128 pixel version – if you do this then OS X will automatically resample down for you to the smaller sizes it can show.įollowing on from this, the next thing I needed to know was that an “icon fileâ€? in OS X is actually a collection of images all rolled up into one file.
The first thing that I needed to know was that, on a Mac running OS X, an icon can be up to 128 x 128 pixels in size and is able to have alpha transparency so that the background behind it is able to partially (or completely) show through.
This seemed like a fairly trivial task, but it turned out that there were a few steps I needed to go through to make this happen.
#Create icons for mac os x mac os x
Changing a file’s icon in Mac OS X in 5 easy stepsĪ couple of days ago, I came across the problem that I wanted to be able to set the icon of a file that I was going to open under OS X independently of the application that was going to be used to open it.
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