.ico

File Type Icon File IconIcon File
File Format Standard
Usage Open manually; may be referenced by an application
Rank ★ ★ ★  Common
Description

The ".ico" extension is the default file extension used for Windows icons. It is a small square bitmap image used to represent a file, folder, program, etc.

The favicon.ico file is used for website icons that appear to the left of the Web address in a Web browser. These files are saved in the root directory of the website on the Web server and are automatically displayed when a user visits the site.

Since ICO files are standard bitmap images, they can be edited with most image editors. If an application will not open an ICO file, changing the file extension to ".gif" may allow the program to open the file.

Open With
Windows

IconMicrosoft Windows Photos

IconIcoFX

IconAxialis IconWorkshop

macOS

IconApple Preview

IconLemkesoft GraphicConverter

IconIconographer

Unix

IconInkscape

IconGIMP

Updated June 8, 2009
space