Uber-apk-signer.jar | Download
uber-apk-signer is an open-source project (commonly found on GitHub under the user patrickfav). It was created to simplify and unify the APK signing process, overcoming limitations of the native jarsigner and early versions of apksigner. Key features include:
java -jar uber-apk-signer.jar --apks myapp.apk --v1-signing-enabled --v2-signing-disabled --v3-signing-disabled
Solution: Java is not installed or not in your PATH. Reinstall Java and add its bin directory to your system PATH variables.
If you have a published application and need to sign it with your official release key (.keystore or .jks file) for distribution on the Play Store:
java -jar uber-apk-signer.jar --apks /path/to/app.apk --ks /path/to/release.keystore --ksAlias my_key_alias
The tool will then prompt you to enter the passwords for the keystore and the key alias securely.
The search for "download uber-apk-signer.jar" brings you to one of the most efficient, reliable, and developer-friendly signing tools available. By following this guide, you have learned how to safely download it from the official GitHub repository, install Java prerequisites, sign single or batch APKs, and even automate the process for CI/CD workflows.
Whether you are signing a modded app, automating a build pipeline, or preparing a release for Google Play, uber-apk-signer.jar replaces cumbersome SDK tools with a single command.
Next Steps:
Last updated: 2025. This article reflects uber-apk-signer version 1.3.0. Always check the official GitHub repository for the latest changes.
The uber-apk-signer.jar is an open-source tool primarily used to sign and zip-align Android APK files through a command-line interface. It simplifies the process by supporting multiple signing schemes (v1, v2, v3, and v4) and providing an embedded debug keystore for quick testing. Download Information download uber-apk-signer.jar
The official and safest way to obtain the tool is through the patrickfav/uber-apk-signer Releases page on GitHub. Latest Version: v1.3.0 (as of February 2023). File to Download: uber-apk-signer-1.3.0.jar.
Requirement: You must have Java 8 or higher installed on your system to run the .jar file. Key Features
Multi-APK Support: Can sign, zip-align, and verify multiple APKs in a single step.
Auto-Verification: Automatically verifies both the signature and zip-alignment after signing.
Embedded Tools: Includes built-in zipalign binaries for Windows, macOS, and Linux (64-bit), meaning you don't need the full Android SDK installed.
Debug Signing: If no release keystore is provided, it automatically signs with a debug key, useful for developer testing. Basic Usage Examples
After downloading, open your terminal or command prompt in the folder containing the .jar file and use the following commands:
Sign all APKs in a folder (Debug mode):java -jar uber-apk-signer.jar --apks /path/to/apks uber-apk-signer is an open-source project (commonly found on
Sign with a specific release keystore:java -jar uber-apk-signer.jar --apks /path/to/apks --ks /path/release.jks --ksAlias my_alias
Only verify existing signatures:java -jar uber-apk-signer.jar --apks /path/to/apks --onlyVerify
Specify a custom output directory:java -jar uber-apk-signer.jar -a /path/to/apks --out /path/to/output GitHub - patrickfav/uber-apk-signer
The sun was just beginning to dip below the horizon, casting long, orange shadows across
cramped apartment. He wasn't a professional developer, just a guy who liked to tinker. His latest project? Customizing an old open-source Android app that had long since been abandoned by its creators.
He’d spent the last three hours meticulously editing the manifest and swapping out assets. Now, he faced the final hurdle: the app wouldn't install without a proper signature.
"Time for the heavy lifting," Elias muttered to himself. He opened his browser and typed the command that had become his mantra for the evening: "download uber-apk-signer.jar".
He found the latest release on GitHub, a tool known for its "it just works" simplicity. As the .jar file trickled into his downloads folder, Elias felt a familiar spark of excitement. This wasn't just a file; it was the key to his digital laboratory. Solution: Java is not installed or not in your PATH
He dragged the file into his project directory, opened a terminal, and typed:java -jar uber-apk-signer.jar --apks /path/to/my-modded-app.apk
The terminal blinked. Lines of white text began to scroll rapidly—verifying entries, aligning files, and finally, the glorious green text: [SUCCESS].
Elias transferred the newly signed APK to his phone. With a tap of the screen, the installation bar slid across. It worked. The "App Installed" notification felt like a small trophy.
He leaned back in his chair, the blue light of the monitor reflecting in his eyes. In the world of code, sometimes the smallest tools—the ones that sit quietly in a .jar file—are the ones that turn a frustrating afternoon into a successful mission.
You're looking for a helpful guide on downloading and using the uber-apk-signer.jar tool.
What is uber-apk-signer.jar?
uber-apk-signer.jar is a Java-based tool used to sign and verify APK (Android Package File) files. It's a popular choice among Android developers and enthusiasts for signing APKs with custom keys, testing APK signatures, and verifying the authenticity of signed APKs.
Downloading uber-apk-signer.jar
To download the uber-apk-signer.jar file, you can use the following methods: