How to Preview the Backup File with BAK Format

--Wednesday, Aug.24, 2016
You may find quite a few .bak files here in each disk on your computer when you intend to perform a thorough clean for your PC. However, the files with this extension can hardly be opened or viewed in a direct way, which renders it hard to make out whether it is an useless file or not. Actually, what is a .bak file? And how can we open and view it? If you don't know yet, better scroll down and gain a general knowledge of .bak file.

Part 1: What is a .bak File?

Bak is a file extension for a specific file format in computing. Generally speaking, a .bak file is known as a backup file or backup, which is a copy of another file. Most of the time, it is created by automatic backup when an application is editing, overwriting or making touches to a particular file as a part of an auto-save procedure. This happens most when a program or app is being updated. Also, there are some software will create .bak files for certain types of data. For example, if you're using Android Transfer and Android Backup Restore to back up your precious data, there will be .bak files created on your computer somewhere.

Almost any kind of file can be saved as a bak file, including files from graphics programs, word processing programs, and database applications. Fun fact is that a user can also add the .bak filename extension manually to create a bak file.

The purpose of a bak file is to create a copy of an original file. This copy can then be accessed if the original is lost, corrupted, or altered in such a way that it is no longer usable or wanted. Saving backup copies of files makes it possible to restore from previous versions of files and data if there is a problem with the previous ones.

What is Bak File

Part 2: How to Open a .bak File?

A .bak file is supposed to be encrypted by the program that creates it. It thus technologically has to be opened in the same program or program. Due to it can contain data in almost any kind of format, there is no an almighty application available that can open all .bak files.

Actually, it's in fact not that difficult. If you really want to open it, you may check out what kind of original content it contains. For example, if you know the .bak file is originally a word document with the DOC extension associated with Microsoft Word. You can simply change its filename extension, that is to say, alter .bak extension to .doc extension, and open the file by double-clicking it. Then, choose the correct software application to open the .bak file. In this case, you should use Microsoft Word to open the file.
Note that if you can't see the file extension, go to "organize" > "Folder Options", then click the "View" tab. Uncheck the box titled "Hide extensions for known file types" like so:

How to Display File Extension

Also, if you do not use the associated software or application to view or edit the bak. file extension, it would be highly possible that the .bak file fails to be opened. Even though it is successfully opened, you may just see a mess in the file. In that case, you'll need to try to open the file via another program.

However, it would happen that you don't know what the original program is. Okay, just keep your shirt on. Here I recommend you a 100% free software - Free File Viewer, which supports to open and view up to near 200 types of files. Why not download it and give it a shot?

How to Open Bak File

Part 3: How to Preview a .bak File?

As is mentioned above, you cannot check out the .bak file through simply changing its extension if it is created by backup & restore software, such as Android Backup Restore and Android Transfer. So, what to do now? You have to use the same software to open and preview the .bak file. Luckily, you can easily view .bak files created by both software via Android Data Recovery. First of all, Lets see where the backup files are and how to preview them.

Where do the backup files store on PC?
Android Transfer: C:\Users\Intel\Documents\Wondershare\MobileGo\Backup
Android Data Recovery: C:\Users\Intel\Documents\Wondershare\Dr.Fone for Android\Backup

If the .bak file was created by Android Transfer, you have to move the file from the original folder to the backup folder of Android Data Recovery. Therefore, the .bak file will be listed on Android Data Recovery.
Note that the .bak file is named depend on the device you used and date it was created.

Step 1 Connect Your Handset to Computer
Run Android Backup Restore Program first. Then, connect your smartphone to computer via USB cable. It takes seconds to finish detecting your device.
Note that if the connection fails, try to follow the instruction to activate USB debugging as to go on.

Android Data Recovery

Step 2 Preview Backup Files with Ease
As is showed below, there is an underlined phrase in blue which reads "View backup history". Click on it to view previous backup files and the .bak files you move in from other folders.

Connect to Computer

Now, select the .bak file you want to scan and tap on "View" button. You will then be able to preview the content it contains, such as Contacts, Call history, Messages, Photos, Videos and so on.

View Contents in Bak File

After the reading, haven't you gained more knowledge of .bak file? Originally, .bak file is aimed at protecting contents from being lost, so to regularly back up important data stored in your phone seems indisputably significant.