File Extension Information

file extension .bak

Kind 1: Backup File
Information: Backup of another document, often created automatically by various programs or the operating system; for example, Windows may create BAK files for the System.ini and Win.ini files.

Important: The file extension should be changed back to the original extension in order for the file to open correctly; this is often done by simply removing the ".bak" part of the filename.

For example, "mydocument1.doc.bak" should be renamed to "mydocument1.doc" before being opened.
File Format: Standard file format supported by many programs.
File Usage: Open file directly.
Open With:
Windows
& Mac:
Original program used to create the file
Last Revised: April 21, 2009

Kind 2: Firefox Bookmarks Backup
Information: Backup of the Firefox bookmarks file; can be used to replace saved bookmarks in case the main bookmarks file becomes corrupted; automatically generated by the Firefox Web browser; typically named "bookmarks.bak"

The bookmarks.bak file is located in the following directories on Windows and Macintosh systems:

Windows
C:\Documents and Settings\UserName\Application Data\Mozilla\Firefox\Profiles\[randon-name]
Mac
/Users/[username]/Library/Application Support/Firefox/Profiles/[random-name].default
File Format: Proprietary file format used by Mozilla software.
File Usage: Open file directly.
May be referenced by an open application.
Open With:
Windows
& Mac:
Mozilla Firefox
Last Revised: April 21, 2009



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