Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .jem

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .jem file?
  • Which program can create the .jem file?
  • Where can you find a description of the .jem format?
  • What can convert .jem files to a different format?
  • Which MIME-type is associated with the .jem extension?
Optifine JSON Entity Model .jem file icon

Optifine JSON Entity Model

JEM file is an Optifine JSON Entity Model. OptiFine is a Minecraft optimization mod. It allows Minecraft to run faster and look better with full support for HD textures and many configuration options.
Detailed description not available
Category: Data files
Application: Optifine
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
Optifine JSON Part Model

Other types of files may also use the .jem file extension. If you have helpful information about .jem extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

PCEM Electromask Data
Internet Explorer Maintenance Extension
Jade Diagram Document
SAP Fiori Journal Entry Data
JetForm Filler Form
jMusic Music Score
IBM Tivoli Resource Model Builder Data
JAWS Script Message File
Virtual Game Station Memory Card

The .jem filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

iem (1), em (1), mem (1), jrm (1), jfm (1), jdm (1), hem (1), uem (1), jsm (1), jm (1), je (1)

Can't open a .jem file?

If you want to open a .jem file on your computer, you just need to have the appropriate program installed. If the .jem association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.jem

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 from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android