.ODEX File Extension

Optimized Dalvik Executable

Developer N/A
3.4  |  36 Votes
Category System Files
Format Binary

What is an ODEX file?

An ODEX file is created by the Android operating system to increase the boot speed of an Android app (an .APK file). It is located alongside an APK file and contains optimized code that speeds up the app load process.

More Information

ODEX files are the optimized versions of .DEX files, which contain the executable code for an Android app. While DEX files generically run on all Android devices, ODEX files are optimized for the specific device on which they reside. They not only help load speed, but they also decrease the amount of space required for the app.

Android creates ODEX files for apps before they are run, and they contain the same filename prefix as their corresponding APK file (e.g., MyApp.apk and MyApp.odex). The data in ODEX files replaces data used in the equivalent DEX file (classes.dex) stored inside the APK file.

NOTE: Dalvik is the name given to the virtual machine that runs the compiled code for Android apps. Therefore, an optimized DEX file, or ODEX file, is optimized for execution by the Dalvik virtual machine.

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Programs that open ODEX files

Included with OS
Updated May 31, 2016

Verified by FileInfo.com

The FileInfo.com team has independently researched the Optimized Dalvik Executable file format and Mac, Windows, Linux, and Android apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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