A daily updated filename extension database!

PREF file extension

The table below provides useful information about the .pref file extension. It answers questions such as:

  • What is the .pref file?
  • What program do I need to open a .pref file?
  • How can the .pref file be opened, edited or printed?
  • How can I convert .pref files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

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

✅ Configuration File

CNF is a general configuration file extension.
CFG format description not yet available
Application: -
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
CFG aliases:
cf, cnf, con, conf, config, pref, prefs, settings
CFG related links:
CFG related extensions:
Novell GroupWise Initialization File

Initialization File

Microsoft Windows Internet Settings File

Internet Sign-up Settings

Windows System Configuration

QuickTime Preferences File

Remote Desktop Connection Settings

ISP Configuration File

Runtime Configuration File

World of Warcraft Config

Other types of files may also use the .pref file extension.

🚫 The .pref file extension is often given incorrectly!

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

lref, pdef, pef, perf, pre, prf, ref

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

PLINK Long-format Reference Allele File
ArchiCAD Favorites Data
Altair FEKO PREFEKO Input Data
Protean Data Exchange Format Data
WinPLOTR Refined Parameters Data
BasicX Preferences File
Carlson 2016 Geologic Model Data
Pentax Electronic Format
RFSCAT Simulator Wind Field Reference Data

🔴 Can't open a .pref 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 cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .pref file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .pref file extension, write to us!

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