PSK File Extension

Unreal Engine Skeletal Mesh Format

File Type psk
Developer Epic Games
Popularity
4.8 (36 votes)
Application Unreal Development Kit
Category 3D Image Files, Game Files
Format Binary

What is a PSK file?

The PSK extension is used by Unreal Engine Skeletal Mesh Format and falls under the categories of 3D Image Files and Game Files, covering 1883 files.

Epic Games, the developer of the Unreal Engine Skeletal Mesh Format (PSK), has released file format and 12 programs designed to handle them.

PSK files are supported by Windows. There are 8 programs available to open a PSK file, including popular tools like Unreal Development Kit, Unreal Tournament and Unreal Tournament 3.

File Signature

HEX code: 41 43 54 52 48 45 41 44 00. ASCII code: ACTRHEAD.

Programs that support PSK files

Windows ⁸

Windows

How to open a PSK file?

If you are having trouble opening a PSK file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.

Unreal Development Kit, Unreal Tournament and Unreal Tournament 3 stand out as the preferred programs to manage PSK files effectively. To get the latest version of Unreal Development Kit, open the Epic Games website where a universal installer for all operating systems is available.

Once installed, Unreal Development Kit will be set as the default program, and PSK files will open automatically.

Set Unreal Development Kit as the default PSK application

Change the default app that opens a file on Mac

Right-click or use Control + Left-click on the desired PSK file to open a menu where you can choose from multiple actions;
Choose "Open in Application" and click "Other";
At the bottom of the window, find the "Enable" menu, where "Recommended Programs" is already selected by default;
Within this menu, select "All Programs" and then locate Unreal Development Kit. Check the box next to "Always open in app" to set it as the default program.

Set default programs for Windows

To get started, right-click your PSK file, then choose "Open With" and select "Choose Another Application" from the context menu;
From the options listed in the pop-up window, specifically choose Unreal Development Kit as the application to handle your PSK file;
Be sure to check the "Always use this app" checkbox and click "OK" to save your preference.

Troubleshooting guide for PSK file complications

Certain problems with PSK files can be conveniently fixed with small software tweaks. Here are some helpful tips to address them.

How can I determine if my PSK file is damaged?

PSK 3d image files that have become corrupted may display one or more of the following symptoms:

The file causes Unreal Development Kit or other software to hang or crash during various operations;
Error notifications appear during file manipulation;
The file encounters problems during the opening process or shows error indications;
An unexplained increase in the size of the PSK file;
The file exhibits poor performance during editing operations in Unreal Development Kit;

Why does Unreal Development Kit quit or crash unexpectedly?

Insufficient software updates are a likely cause of Unreal Development Kit crashes. Be sure to install the latest updates for Epic Games products.

Restarting your computer is a crucial troubleshooting measure that can alleviate numerous common problems. Therefore, it is advisable to restart your computer before modifying any settings related to the software.

What methods can be used to repair a damaged PSK file?

Start a data recovery program and open the damaged PSK file. Then, choose the "Repair" option from the menu. Wait for the recovery process to finish as it will automatically restore the damaged 3d image files.

How to edit a PSK file?

To make changes to PSK files, you need specialized software that allows both opening and editing the 3d image files. Online PSK editors offer fewer capabilities than applications optimized for Unreal Engine Skeletal Mesh Format.

Best PSK editors 2026

Considering the mentioned criteria, we have compiled a list of PSK editors that may suit your needs.

PSK Editor Software	Developer	Platforms	Overall Rating
Unreal Development Kit	Epic Games	Windows	4.2 out of 5 (41 review)

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