ICO

Windows icon file format

Entityraster-graphics file formatQ729366

Also known as .ico · Windows icon file · Microsoft Windows icon file

Instance of: raster-graphics file format

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

The ICO file format is an image file format for computer icons in Microsoft Windows. An ICO file holds one or more images at multiple sizes and color depths, from which Windows selects and scales the most appropriate one for a given use. A Windows application's own icon — shown on the desktop, in the Start menu, or in File Explorer — is stored in the same format inside its executable as an icon resource, rather than as a separate file.

Overview

All data

19 statements · 21% with external sources · numbers in brackets are citations

File extension: ico
Media type: image/vnd.microsoft.icon nature of statement: official
1
Sources
1.iana.org/assignments/media-types/image/vnd.microsoft.icon
View statement on Wikidata ↗
Developer: Microsoft
File format identification pattern: 00000100 encoding: hexadecimal
Has use: icon
favicon

On other databases

7 identifiers linking ICO across the web's reference databases

File Format Wiki page IDICO
Freebase ID/m/06mvj8
Microsoft Academic ID (discontinued)203927944
NARA File Format Preservation Plan IDNF00210
PRONOM file format IDx-fmt/418
Uniform Type Identifiercom.microsoft.ico
Wolfram Language entity codeEntity["FileFormat", "ICO-1"]

Data quality

statements

21%

externally sourced

Source last edited June 29, 2026. AIDB refreshes this page daily.

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Cite this page

AIDB. (2026). ICO (Q729366). Retrieved from https://aidb.si/e/ico-Q729366