MANIFEST file format description

Many people share .manifest files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .manifest file can be edited, converted or printed with. On this page, we try to provide assistance for handling .manifest files.

2 filename extension(s) found in our database.

.manifest - Steam Manifest Data

The MANIFEST data files are related to Steam. The MANIFEST file is a Steam Manifest Data. Steam is a digital distribution, digital rights management, multiplayer and communications platform developed by Valve Corporation.

Data files
- / -
vmanifest, vrmanifest
Steam Manifest Data related extensions:
Steam Application Cache Data
Steam ALT Data
Valve Steam Cache Data
Steam Crash Data
Steam Client Game Backup Data
Steam Client Dump Data

.mf - Java Manifest File

The MF development files are related to Java Runtime Environment. The MF file is an Java Manifest file ( The manifest is a special file that can contain information about the files packaged in a JAR file.

Java Runtime Environment
Development files
- / -
manifest, mft, mnft
Java Manifest File related extensions:
Visual Basic OLE Type Library
Xilinx ISE NetGen Log
Xilinx ISE PAR Summary Data
Delphi MultiHelp Index
Crestron SIMPL Program
ASProtect Related Data

Naturally, other applications may also use the .manifest file extension. Even harmful programs can create .manifest files. Be especially cautious with .manifest files coming from an unknown source!

Can't open a .manifest file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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If you have useful information about the .manifest file format, then write to us! >> MANIFEST file