On Tue, 16 Jun 2020 20:27:36 -0400, Mayayana wrote:

I think that it can also be a PNG in newer Windows versions,
but I don't know the details of how that works.

Notice this is apparently a PNG file in Windows 10 Pro, version 1909:
https://i.postimg.cc/NFhjn4cd/icon04.jpg

It wouldn't be possible to edit an icon in a system file
due to permissions. What one can do is to make an
icon and then assign that to a shortcut. In addition
to Greenfish, there's IcoFX that I use. I don't know
whether it's still free. IcoFX can also make a multi-image
ICO file.

Notice we covered these as the best freeware for this purpose:
https://i.postimg.cc/hPTCzbtc/icon08.jpg

I like to take an image and then paste that into
an icon editor and work from there. It's much easier to
start with something like a reduced-size face than to draw
a face using one pixel at a time.

Notice we covered that topic in gory detail over he
o *Tutorial for creating custom Windows icons from screenshots*
https://groups.google.com/d/msg/microsoft.public.windowsxp.general/xm6aHzaC-D8/uD1PLfk6DAAJ
o https://i.postimg.cc/cHVqvPPb/icon03.jpg
o https://i.postimg.cc/3N7ZdRSb/icon02.jpg
o https://i.postimg.cc/vHc2THz3/icon01.jpg
--
People who filter out facts are always the ones most immune to them.