PGP Key Viewer | Decode PGP Public Key Block

PGP key viewer that decodes an armored public key block: fingerprint, key ID, algorithm, user IDs, subkeys, expiry and packets. Runs in your browser. Free. Designed specifically for developers and professionals, this free online viewer runs entirely in your browser to process tasks quickly and securely. Enjoy unlimited usage with no data tracking and no registration required.

Also known as: pgp key viewer online · pgp public key decoder · pgp public key block decoder · gpg key viewer · openpgp key inspector · check pgp key fingerprint · pgp key expiration checker · pgp packet decoder

encryption tools

ssl and security tools

viewers

PGP Key Input

Key Details

Fingerprints, user IDs, subkeys and expiration dates will appear here

About PGP Key Viewer

A PGP key viewer is used to check what is inside an OpenPGP public key before you trust it, import it or publish it. Paste an ASCII-armored key block or upload a .asc or .gpg file, and the viewer shows the fingerprint and key ID, the algorithm and size, every user ID, each subkey with what it can do, and when each one expires or was revoked.

Key Features

Computes v4 (SHA-1), v5 and v6 (SHA-256) fingerprints and key IDs with the Web Crypto API
Reads RSA, DSA, ElGamal, NIST P-256 to P-521, brainpool, Ed25519, Ed448, X25519 and X448 keys, including RFC 9580 v6 keys
Shows key flags (sign, certify, encrypt, authenticate) and expiration from the latest self-signature
Flags revoked keys, revoked user IDs and revoked subkeys with the revocation reason
Lists every packet with its tag and decoded fields, like gpg --list-packets
Converts a binary .gpg or .pgp file to ASCII armor and checks the CRC24 checksum

Use Cases

Confirm the fingerprint of a coworker's key before encrypting a file to them
Check when a release-signing key for a Linux package repository expires
Inspect the GPG key you added to GitHub for verified commits
See which recipient key IDs an encrypted .asc message was sent to
Review a vendor's security@ key from their website before reporting a vulnerability

Supported Formats

.asc

.gpg

.pgp

.key

ASCII armor

Binary OpenPGP packets

Related Keywords

pgp key viewer

pgp key viewer online

pgp public key decoder

pgp public key block decoder

gpg key viewer

openpgp key inspector

check pgp key fingerprint

pgp key expiration checker

pgp packet decoder

How do I check the fingerprint of a PGP key?

Paste the key block and read the fingerprint under the primary key: 40 hex characters for a v4 key, 64 for a v5 or v6 key. Compare it with a fingerprint you got through a separate channel, such as the owner's website or a phone call. The key ID is only the last 16 hex characters of a v4 fingerprint, and different keys can share one, so always compare the full fingerprint. Running gpg --show-keys key.asc on your own machine prints the same value.

Keys never leave your browser

Decoding and fingerprinting run locally with JavaScript and the Web Crypto API. Nothing is uploaded. Even so, never paste a private key into any website; this viewer warns you and hides secret key material if you do.

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Frequently asked questions

What is PGP Key Viewer used for?

PGP key viewer that decodes an armored public key block: fingerprint, key ID, algorithm, user IDs, subkeys, expiry and packets. Runs in your browser. Free.

Is PGP Key Viewer free to use?

Yes. PGP Key Viewer is completely free with no usage limits, and there is no paid tier required to use it.

Do I need an account to use PGP Key Viewer?

No. PGP Key Viewer works immediately in your browser with no signup, login, or email address required.

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