What are OBB files and how to open them
Are you having problems opening an OBB file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.
What is an OBB file?
An .OBB file is an Opaque Binary Blob file.
The OBB file format was developed by Google for its Android system. This file format is used by Android app developers to package large files that are used by their apps on the user's Android device.
There are shared and proprietary .obb files. Resources stored in shared OBB files can be used by different apps. For example, an OBB file with map data may be shared and used by Android apps that have been granted access rights to the map data in those .obb files.
Proprietary OBB files, on the other hand, are unique to a single app.
Android developers use Linux applications like Obbtool and MKOBB.SH to create .obb files. It's recommended to leave these OBB files alone, in order to ensure that the Android apps that need to use them can continue to work properly.
You usually do not need to edit or view these files, as they only contain information usable by the software program that uses them.
Last updated: March 17, 2022
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