Suppose you have an APK file named example.apk and you want to sign it using a keystore named example.keystore with a password example_password and an alias example_alias with a password example_alias_password . You can use the following command:

is an open-source command-line tool designed to simplify the complex process of signing, zipaligning , and verifying Android application packages (APKs). It is widely used by developers and security researchers to automate workflows that typically require multiple separate tools from the Android SDK. Official Uber APK Signer JAR Download

apksigner sign --ks my-release-key.keystore --out signed-app.apk unsigned-app.apk

The Uber APK Signer Jar is a specific implementation of the APK Signer tool, provided by Uber, a popular ride-hailing service. The Uber APK Signer Jar is used to sign APK files with a digital certificate, ensuring that the APK file has not been tampered with or altered during transmission.

You can also download the Uber APK Signer Jar using Maven or Gradle: