Opening a REZ File

The REZ file type is primarily associated with LithTech RezMgr.

REZ	File extension: REZ
	File type:	container

What is a REZ file?

REZ files mostly belong to LithTech RezMgr. REZ files are containers for game-related resources and other specialized data. They are mainly used to store assets such as graphics, sounds, and 3D models in games.
For example, many REZ files are LithTech game resource files managed by RezMgr. Other uses include:

Game Archives: Used by mod loaders like San Andreas Mod Loader and similar tools to save game data.

Compressed Archives: Some REZ files act as compressed containers for game assets.

Specialized Data Files: Certain REZ files hold XFOIL airfoil polar data (source) or contest resources (source).

FilExt.com tip: Each REZ file’s structure depends on the original application that created it, so opening or extracting its contents typically requires the correct, specialized tool.

How to open a REZ file

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

Online REZ Text Viewer

Choose your .rez file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert REZ files:

LithTech RezMgr
See the previous paragraphs to learn more about the main application. REZ files are often referred to as LithTech RezMgr games because this type of file is primarily created or used by this software.
Alien vs Predator
Blood 2 Archive
Related links: Dragon UnPACKer
Escape Velocity Nova (Plug-in) by Ambrosia Software, Inc.
After unzipping the distribution .BIN files and putting them into the Plugins directory, you launch EV Nova. EVN will then convert the .BIN files into a new format, .REZ, which is the BurgerLib resource format. In the process of conversion, it will handle endian-swapping of platform specific data.
LithTech Game (Resource File) by Touchdown Entertainment, Inc.
An archive that contains the various textures, models, sounds, etc. used by games created using the LithTech game technology. Various sites have tools that will edit these resources. The identifying characters used for this association are - Hex: 52 65 7A 4D 67 72 20 56 65 72 73 69 6F 6E 20 31 20 43 6F 70 79 72 69 67 68 74 20 28 43 29 20 31 39 39 35 20 4D 4F 4E 4F 4C 49 54 48 20 49 4E 43 2E 20, ASCII: RezMgr Version 1 Copyright (C) 1995 MONOLITH INC. . This file format is classified as Archive. Related links: Lith Tools
No One Lives for Ever Archive
Related links: Dragon UnPACKer
Purge
Related links: Dragon UnPACKer
Resume Divider by Luna
Japanese site. This is a file dividing tool. If you save a source archive file and .REZ file, you can re-do same file dividing process. When making fragment file(s), you can camouflage fragment file(s) as .JPG files.
Sanity: Aiken's Artifact Archive
Related links: Dragon UnPACKer
Shogo Archive
Related links: Dragon UnPACKer

REZ file format:

The file format determines how the data is stored in the file. The file format can be deduced from the file extension and the signature. If the file extension or signature does not match the file format, errors will occur when opening or editing the file. So you need a detailed analysis of a file to find out the format and the associated program. In the following you will find our evaluation of the REZ files:

The REZ file extension is not found very often and is used by different programs with different formats. The two most common formats are as follows:

50% of all REZ files use the same file format, which have the signature RezMgr Version 1 Copyright (C) . These files are binary files, so they do not contain text, but only cryptic characters. The average file size is 36 MB with most files being between 890 KB and 240 MB in size. The file type was created 20 years ago but is still used today. The keywords RezMgr Version 1 Copyright (C) 1995 MONOLITH INC and LithTech Resource File v1.0 are typical for these files. CLAW.REZ or RF159.REZ is a typical file name. These files are often associated with guns, engine, chars and game.
10% of all REZ files start with the bytes ? )#¾ crucial for this file format. The contents of these files cannot be read by a human; only a computer program can interpret the data. The files are on average 120 MB in size and range from 7 MB to 220 MB. A common filename is sa_interface.rez. Such files sometimes refer to interface.

The remaining 40% of all REZ files are different files with different signatures, the following 3 formats exist: Medal Of Honor. Often described as sounds. If you want to find out what your REZ file contains, drag and drop it onto this page.

Technical Data for REZ File Extension

File classification:

Game

Identifier:

Hex: 52 65 7A 4D 67 72 20 56 65 72 73 69 6F 6E 20 31 20 43 6F 70 79 72 69 67 68 74 20 28 43 29 20 31 39 39 35 20 4D 4F 4E 4F 4C 49 54 48 20 49 4E 43 2E 20, ASCII: RezMgr Version 1 Copyright (C) 1995 MONOLITH INC. (provided by TrID database)

Related files:

wad, res, arc, ltb, dtx, r, zip, bank, irs, dsres, pr3, pak, dat, rar

Related links:

Lith Tools

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: ZipZag.rez
EXEFile: %ProgramFiles%\ZipZag\zipzag.exe %1

ProgramID: DUP5.Files
EXEFile: %ProgramFiles%\Dragon UnPACKer 5\drgunpack5.exe

a rez container is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with REZ files

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