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List of common backup file extensions
Some of the most common backup formats produced by popular backup solutions. Used to backup physical media, computers, or even mobile devices like smartphones.
Common backup files may change in time as the popularity and significance of some formats can change.
Whole category of backup files contains now 700 file types. Show all backup file types.
 bak | Files with bak extension can be most often find as one of the many backup files generated by numerous programs, usually by the means of renaming the original extension to bak. |
| bbb | Files with bbb extension can be generally found as backup files of Blackberry smart phone created in the Blackberry Link or Blackberry desktop software for PC or Mac. |
 bkf | Files with bkf extension can be generally found as Windows backups, made using the Windows Backup / Microsoft Backup utility in Windows NT to Windows XP. This format was eventually replaced by the VHD format. |
| bkp | Files with bkp extension can be mainly found as older backup files from backup utilities and other programs. |
| dbk | Files with dbk extension can be often found as phone backups made using Sony Ericsson PC Suite. |
 gho | Files with gho extension are disk images or backups created using the versions of Norton Ghost backup utility. There are several versions of this format for each respective version of Norton Ghost. |
| ipd | Files with ipd file extension can be found as backup files from older backup files from Blackberry mobile phones prior 2012. |
 iso | Files with iso extension are generally used for common CD/DVD disk image format. ISOs are used as a standard backup format of physical disks and are widely supported by burning or virtualization software. |
 json | A json file extension is also associated with the Mozilla Firefox web browser and Seamonkey internet suite. A .json file stores saved bookmarks in JSON file format that can be created during the backup process of currently saved bookmarks. |
 mdbackup | A mdbackup file extension is mainly related to one of the backup formats used in iOS devices like iPhone. |
Nero BackItUp software uses .nba files as the main backup archive formats. These are essentially ZIP archives with changed extension. | |
| nbf | Files with nbf extension can be mainly found as backup archives made using Backup NOW program. |
Files with nco extension may be typically encountered as backup files created using the Nero BackItUp suite. Basically encrypted and occasionally also non-encrypted ZIP file with unique extension. | |
 nrg | Files with nrg extension are used for the default disk image format in Nero Burning ROM software. NRG is not just "renamed" ISO image, but proprietary format used by Nero. However both serve the same purpose, ie. physical media backup and burning. |
| old | Files with old file extension may be usually found as various backup files from programs for Windows OS. Sometimes it's just a simple extension renaming. |
 rar | Files with rar extension are compressed archives using RAR or WinRAR compression utilities. Along with the ZIP format, the RAR format is one of the most common formats used and can be extracted by almost every archiving tool. |
 sbf | Files with sbf extension are mainly used for backups created with the Sony Ericsson Backup and Restore program for Xperia smart phones. These files store backup of phone settings, MMS and SMS messages, phone book, call logs and applications. |
| sbu | Files with sbu extension can be commonly found as smartphone backups preformed using the Samsung Kies software. Used to restore contacts and other data to the device. |
| spb | Files with spb extension is mainly known to be used for a contact backup exported by Samsung Kies management software for various Samsung smart phones. |
| spba | Files with spba extension are in most cases special contact list backups from Samsung Phones made using the Samsung Kies software. |
| tib | Files with tib extension can be typically encountered as complete hard disk backups made using Acronis True Image backup software. |
 wbcat | Files with wbcat file extension might be found as part of backup from Microsoft Windows operating system. |
Files with zip is associated with the WinZip compression tool. ZIP file is compressed archive container that contains archived files, compressed in ZIP compression format. Common archive format that can be extracted with any archiving tool. |
This is a list of some the most common file types from this category and may change in time as the popularity and significance of some formats can change. Whole category of backup files contains now 700 file types. Show all backup files.
