What is Icon?
Icon files on the Windows platform have the ICO format. The format debuted with Windows 1.0 and icons were monochrome. With successive versions of Windows being released, ICO files began supporting more colors, as well as larger sizes. They can now support additional data such as transparency and shadows. ICO files are small bitmap images and are included in their different sizes in an executable file.
ICON is the ICO equivalent for an icon file on the OS X platform. A single icon will like be created in several different dimensions, all ICO format, based on where in Windows the icon is meant to show. The following is a brief overview of the ICO files sizes used in Windows.
Application Icons 16×16, 32×32, 48×48, 256×256
Control Panel Items 16×16, 32×32, 48×48, 256×256
Toolbar Icons 16×16, 24×24, 32×32.
Dialogs and wizards 32×32, 48×48
Icons for Windows 8 (Modern Design)
Application icons 30х30, 50×50, 150×150
App Bar icons 26х26
There are several different programs and apps that can create an ICO file like Adobe Photoshop and you can find several services that will take PNG or JPEG files and convert them to ICO. The Windows Phone platform does not use ICO format icons, instead it uses PNG files.
How to open an ICON file online?
Icons are usually created in groups of files that are the same image but vary in size. You can easily view them online using Jumpshare by adding the entire group to a folder. The file viewer renders an excellent view of ICO files preserving details such as transparency and shadows allowing anyone you share the file with to see the image in high quality. When grouped together in a single folder, the multiple ICO files will be easy to navigate using the thumbnails on filmstrip at the bottom of the viewer.