Ico to PNG conversion

http://www.converticon.com for converting icon files to png.

Originally had http://www.icopng.com/index.php, but that seems to be offline, now.

Image editor to extend MS Paint (transparency & animation)

Generally, for my purposes the image editor in MS Paint or Visual Studio is adequate, but both these fail to provide transparency for GIFs or PNG files. http://www.online-image-editor.com/index.cfm is a great way to add this functionality. Looks like it'll also do GIF animations.