Open your terminal, navigate to your folder, and use the following commands based on your needs: Basic Debug Sign: Signs the APK with an embedded debug keystore. java -jar uber-apk-signer.jar --apks /path/to/apks Use code with caution. Copied to clipboard Verify an APK: Checks the signature and zip alignment of the application. java -jar uber-apk-signer.jar --verify --apks /path/to/apks Use code with caution. Copied to clipboard Custom Keystore Sign: Signs the application using your own release key.