# bundletool

> Manipulate Android Application Bundles.
> Some subcommands such as `bundletool validate` have their own usage documentation.
> More information: <https://developer.android.com/tools/bundletool>.

- Display help for a subcommand:

`bundletool help {{subcommand}}`

- Generate APKs from an application bundle (prompts for keystore password):

`bundletool build-apks --bundle={{path/to/bundle.aab}} --ks={{path/to/key.keystore}} --ks-key-alias={{key_alias}} --output={{path/to/file.apks}}`

- Generate APKs from an application bundle giving the keystore password:

`bundletool build-apks --bundle={{path/to/bundle.aab}} --ks={{path/to/key.keystore}} --ks-key-alias={{key_alias}} –ks-pass={{pass:the_password}} --output={{path/to/file.apks}}`

- Generate APKs including only one single APK for universal usage:

`bundletool build-apks --bundle={{path/to/bundle.aab}} --mode={{universal}} --ks={{path/to/key.keystore}} --ks-key-alias={{key_alias}} --output={{path/to/file.apks}}`

- Install the right combination of APKs to an emulator or device:

`bundletool install-apks --apks={{path/to/file.apks}}`

- Estimate the download size of an application:

`bundletool get-size total --apks={{path/to/file.apks}}`

- Generate a device specification JSON file for an emulator or device:

`bundletool get-device-spec --output={{path/to/file.json}}`

- Verify a bundle and display detailed information about it:

`bundletool validate --bundle={{path/to/bundle.aab}}`