Opening OSK Files

The OSK file type is primarily associated with osu!.

OSK	File extension: OSK
	File type:	compressed archive

What is an OSK file?

OSK files mostly belong to osu!. An OSK file is a package for the osu! game that holds a custom skin. It is built as a ZIP archive and contains the images, sound files, and configuration details that change the game’s look and feel.
Key details summarized by FilExt.com:

Format: A standard ZIP container that holds multiple assets.

Usage: Provides a custom interface for osu!, altering menus, icons, and gameplay visuals.

Flexibility: Can be extracted and modified with any common ZIP tool.

FilExt.com tip: For further information, visit the osu! community forum thread.

How to open an OSK file

You need a suitable software like osu! to open an OSK file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your OSK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a OSK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online OSK Text Viewer

Choose your .osk file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert OSK files:

osu!
See the previous paragraphs to learn more about the main application. OSK files are often referred to as osu! compresseds because this type of file is primarily created or used by this software.
osu!
An .OSK file is an osu! skin file, which is used to customize the appearance of the osu! game. These skins are packaged in a .ZIP archive and contain images, sounds, and other resources that alter the game's visuals and audio. This file format is classified as Game Files.

Technical Data for OSK File Extension

File classification:

Compressed

Related files:

osz, oks, osu, osr, zip, rar, 7z, tar

an osk compressed archive is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with OSK files

Associate the OSK file extension with the correct application.
Update your software that should actually open compressed archives. Because only the current version supports the latest OSK file format. Search, therefore, e.g. on the manufacturer website after an available osu! update.
To make sure that your OSK file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .OSK file online - secure, fast, and no downloads needed.