Free Online Android Signing Certificate Generator (App Filing Public Key / Signature MD5) - atools

Free online Android signing certificate tool: generate keystores (JKS/PKCS12) for app filing, or parse existing keystores/APKs to extract the public key (modulus), signature MD5 and package name.

View source on GitHub

Local · no upload

Keystore settings

AliasValidity (years)Keystore passwordConfirm passwordKey sizeKeystore format

Certificate subject (DN)

CN (common name, package name or app name recommended)OU (organizational unit, optional)O (organization, optional)L (locality, optional)ST (state, optional)C (country code, e.g. CN)

C=CN

Note: this tool generates/parses Android signing keystores locally in your browser for app filing (public key, signature MD5, package name). Keystores and passwords are never uploaded.

Generate keystore

1. The app filing form (Android platform) requires: package name, public key and signature MD5. The public key is the RSA modulus of the signing certificate in hex (the “modulus” shown by tools like jadx); signature MD5 is the MD5 fingerprint of the certificate (32 hex characters, no colons).

2. A lost keystore file or password cannot be recovered: back it up securely. The filing form only needs the public key and signature MD5 above — never upload the keystore itself.

Free Online Android Signing Certificate Generator (App Filing Public Key / Signature MD5) - atools

Free online Android signing certificate tool: generate keystores (JKS/PKCS12) for app filing, or parse existing keystores/APKs to extract the public key (modulus), signature MD5 and package name.