File Extension Information

file extension .bak

Kind 1: Backup File
Information: Backup of another document, often created automatically by the operating system or various programs such as Autodesk AutoCAD; 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: Original program used to create the file
Macintosh: 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: Mozilla Firefox
Macintosh: Mozilla Firefox
Last Revised: April 21, 2009



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