File Extension Library

.OBB File Extension

  • Developer by: Google
  • Category: Data Files
  • Format: Binary

What are .OBB files and how to open them?

Can't open .OBB file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .OBB file.

What is a .OBB file extension?

.OBB file extension is created by Google. .OBB has been classified as Data Files. The format of .OBB file is Binary.

.OBB is Android Opaque Binary Blob File

File used by some Android apps sold on the Google Play online store; contains additional app data that is not stored in the main application package (.APK file), such as graphics, media files, or other large program assets; uses an encrypted format.

Since Google Play only allows APK files to be 50MB or smaller in file size, app developers must use different files to store additional app assets. Developers can use any format they choose, such as .ZIP or .MP4, but they can also use the JOBB tool provided with the Android SDK to bundle and encrypt assets together in an OBB file. These additional assets can be uploaded with the APK file using the Google Play Developer Console, and users that download the app will receive both the APK file and the additional asset files.

NOTE: Any additional asset provided beyond the APK file is called an APK Expansion File.

List of all softwares that can open the Android Opaque Binary Blob File
Google Play Developer Console

How to fix problems with .OBB files

  1. You need to update the application that you normally use to open .OBB files. Only the latest version of the software supports the current .OBB file format
  2. You need to check the .OBB file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)