All about GPK Files

The GPK file type is primarily associated with QuickBMS.

GPK	File extension: GPK
	File type:	archive file

What is a GPK file?

GPK files mostly belong to QuickBMS. GPK files are package files that bundle data used in different applications. They are not a single format but a container that may store game assets, project data, audio, or graphics.
For example, you might see these variations:

Game Package (Unreal Engine): Files that organize game assets for use in Unreal Engine.

Windows Executable Package: Files built as EXE containers that run game or application data. See details at Microsoft.

Geospatial Project File: Files used in Bentley software for geospatial data and project management. Visit Bentley for more info.

Unity Data Archive: Archives created by Unity game engine to store game data. More at Unity.

Android Game Package: ZIP-based packages that contain Android game data, often linked with the Google Play Store. Check Google Play.

Audio Container (Ogg Vorbis): Files that store audio data using the Ogg format, backed by Xiph.Org. See Xiph.Org.

Geoprocessing Package: Compressed 7z archives used by ArcGIS Pro in Esri systems. Visit Esri.

Racelogic Data File: Files that hold data logging information from race recording systems.

Graphics Package: Files that store game texture and image data, sometimes in PNG format. More details at Game Extractor.

FilExt.com tip: The method to open a GPK file depends on its internal format. Using a file header viewer can help determine the correct extraction tool (for example, QuickBMS or an engine-specific editor) to open and view its contents.

How to open GPK files

You need a suitable software like QuickBMS to open a GPK 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 GPK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a GPK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online GPK Text Viewer

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GPK file format details:

If you know the file format, you can also find out how to open or edit the file. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. If the file extension or signature does not match the file format, errors will occur when opening or editing the file. Exact knowledge of the format is therefore important in order to solve problems occurring in files. Our analysis of the GPK files produces the following result:

The GPK extension is quite commonly used. The file itself covers different formats for different programs. The file formats most commonly found in GPK files are:

• 35% of all GPK files internally utilize the Unreal file format. This Unreal Engine Package by Epic Games may contain textures, maps, music files, 3D models, or game settings. The package can be created and edited using the Unreal Development Kit. These are binary files, so they do not contain words or text. Most of these files are 8 KB to 16 MB in size. The file type was developed only in the last few years. The following keywords are characteristic: None. LoadingImages.gpk or S1UI_Message.gpk is a typical file name. Files like these are sometimes connected to loading, popori, images, character, message, item, crosshair, castanic, window, drop and head.
• 25% of all GPK files are using the well-known EXE file format to store the data. EXE is the abbreviation for executable and is the standard executable file format on Windows. The format can be identified by the letters "MZ" at the beginning. Executable files can also be used to distribute viruses and other types of malicious software (malware). They consist of illegible, cryptic characters. The files are often between 220 KB and 340 MB in size. Certain words are almost always found in the files, such as !This program cannot be run in DOS mode. Movie01.GPK or BGM.GPK is a typical file name. Such files are related to event, voice, script and moviez.

The remaining 40% of all GPK files are different files with different signatures, such as ZIP, 7z, GPK, PROV and bfg. Tagged as sound, icon, pcfemale, progress, awaken, fonts, model or boss. Just click the "Choose your .gpk file to analyze" button on this page to find out what your GPK file is.