.BAK File Extension
- Developer by: Mozilla
- Category: Backup Files
What is an .BAK file?
.BAK is Firefox Bookmarks Backup
A BAK file is a backup of the Firefox bookmarks file, which can be used to replace saved bookmarks in case the main bookmarks file becomes corrupted. It is automatically generated by the Firefox web browser and 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\MozillaFirefox\Profiles\[random-name]
- Mac -
Programs that open Firefox Bookmarks Backup
File Type 2 Backup File
Category: Backup Files Format: Text and Binary
A BAK file is a backup of another document or file, commonly created automatically by software programs or by the operating system. The file most often just contains a copy of the original file and can be restored to the original by replacing the ".bak" extension with the original extension.
Often BAK files are created by simply appending ".bak" to the original filename. For example, document.doc may have a backup file document.doc.bak.
NOTE: An example program that uses the ".bak" extension is AutoCAD. Windows may also create BAK files for the System.ini and Win.ini files.
Programs that open Backup File
|Autodesk AutoCAD 2018|
|Microsoft SQL Server 2016|
File Type 3 ACT! Backup File
Developer by: The Sage Group Category: Backup Files Format: Binary
Backup file created by ACT!, an application used for customer relationship management (CRM); contains a backup of CRM data, which includes customer information such as names, address information, and history.
ACT! BAK files are used for restoring data in the event the CRM data is lost. They are usually created on a periodic basis and when upgrading ACT! software.
NOTE: Sage ACT! became Swiftpage Act! in 2013.
Programs that open ACT! Backup File
File Type 4 MobileTrans Backup File
Developer by: Wondershare Category: Backup Files
A BAK file is a backup file created by Wondershare MobileTrans, a program used to backup and transfer data from and to devices. It contains data backed up from a device, such as contacts, messages, calendar information, call logs, photos, music, videos, apps, and app data.
BAK files are the primary file type associated with MobileTrans. The file is created when backing up a phone to a computer. To do this in MobileTrans, click "Back Up Your Phone" on the homepage of the program, select the content to backup, and click "Start Transfer". The BAK file will then be created to store the backup data and placed in the following directory:
To restore a BAK file to a device in MobileTrans, click "Restore From Backups" on the homepage of the program, click "MobileTrans", select the BAK file you want to restore, and click "Start Transfer".
Common BAK Filenames
[name of device]_[date]_[time].bak - Naming convention for BAK files created by MobileTrans.
Programs that open MobileTrans Backup File
File Type 5 Finale Backup File
Developer by: MakeMusic Category: Backup Files
File created by Finale, a music notation application for playing instruments, vocals, etc.; replaced by the .BAKX file, which was released in Finale 2014; contains backup data for .MUS files; created when MUS files are saved by the user.
To create a BAK file:You must first enable the backup creation option. Select
.Select "Save and Print" in the list on the left of the "Preferences" window, check the "Make Backups When Saving Files" checkbox, and click
.Now when you save your MUS file, a BAK file will be created.
Programs that open Finale Backup File