Before diving into the download, it's crucial to understand what this tool is and why it exists.
Once you've downloaded apksigner.jar , you can use it from the command line:
To force v2 and v3 signing only (no v1 JAR signing): apksigner.jar download
: Apps signed with v2+ signatures install faster and offer better protection against unauthorized modifications. Quick Tips
java -jar apksigner.jar verify --verbose my_signed_app.apk Before diving into the download, it's crucial to
Once you have downloaded APKSigner.jar, here are some basic commands to get you started:
If you only need apksigner.jar and don't want to install the entire Android SDK, you can try downloading it directly from the official Google repository: Here are the steps: : While the
Downloading APKSigner.jar is a straightforward process. Here are the steps:
: While the .jar exists in the lib folder, you should generally use the apksigner wrapper script found in the build-tools/[VERSION]/ folder for ease of use. How to Use apksigner
java -jar apksigner.jar sign --ks my-release-key.jks --out app-signed.apk app-unsigned.apk ``` **To verify a signature:** ```bash java -jar apksigner.jar verify -v app-signed.apk ``` ### **Why Use apksigner Instead of jarsigner?** While `jarsigner` only supports the V1 (JAR-based) signature, `apksigner` supports: * **V2 & V3 Schemes:** Faster app installation and better protection against unauthorized modifications. * **V4 Scheme:** Required for certain features in Android 11 and above. * **Automatic Verification:** It checks that the APK will be successfully verified across all Android versions targeted by the app. Use code with caution. apksigner | Android Studio