KeyStoreViewer: App Signatures

KeyStoreViewer: App Signatures

Inspect app and APK signing certificates, fingerprints, and public keys.

Seiko System

Screenshots

Screenshot of KeyStoreViewer: App Signatures Screenshot of KeyStoreViewer: App Signatures Screenshot of KeyStoreViewer: App Signatures Screenshot of KeyStoreViewer: App Signatures Screenshot of KeyStoreViewer: App Signatures

Description

Find the signing information you need for Android apps.

KeyStoreViewer helps developers inspect signing certificates from installed apps and APK files. View MD5, SHA-1, and SHA-256 certificate fingerprints and public key information without digging through command-line output.

KEY FEATURES
• Inspect the signing information of installed apps.
• Open an APK file to view its signing certificates.
• View MD5, SHA-1, and SHA-256 certificate fingerprints.
• View public key information, including the modulus for RSA keys.
• Copy fingerprints and public key values, or share signature details.

BUILT FOR EVERYDAY DEVELOPMENT
• Find the certificate fingerprints required by APIs and third-party SDKs.
• Retrieve signature and public key information for app registration.
• Investigate signing differences between debug and release builds.

Certificate fingerprints identify signing certificates. They are not APK file checksums, and a matching signature alone does not guarantee that an app is safe.

Versions

Version Date Size Requires Android Download
1.3.1 current
60979ca6d83a537d…
2026-10-01 3.1 MB API 24
1.2.1
3afc23a8c65013be…
2026-09-12 3.1 MB API 24
1.2.0
7b6f395f5ae35c0b…
2026-09-11 3.0 MB API 24

Permissions

What the app asks the system for. Android only grants sensitive access after you confirm it.

  • Installed appsSee which apps are installed.
  • NotificationsShow notifications.
  • Run at startupStart automatically after the device is switched on.

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