PGP Public Key Inspector

Inspect bounded version 4 public OpenPGP packets, fingerprints and unverified user IDs locally.

Inputs stay on your device No sign-up Free to use
How this works

The tool runs in this browser. Your file or text is not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.

Privacy details

Inspect input controls

Showing an example. Edit to see your own.

Public version 4 key block only. Never paste a private or secret key. The example is synthetic.

Processed in your browser. Your inputs stay on this device.

How to use PGP Public Key Inspector

  1. Paste a supported public-key block or keep the included synthetic example.
  2. Run the local packet inspection and read its algorithm and fingerprint details.
  3. Confirm key identity through an independent trusted channel before using the key.

Example: PGP Public Key Inspector

Decode the included synthetic public key without trusting its user ID.

You add
Leave Public OpenPGP armor at the supplied synthetic example, then run inspection. It begins -----BEGIN PGP PUBLIC KEY BLOCK-----; do not supply secret-key armor.
You get
The report identifies a version 4, 1024-bit RSA public-key packet, its fingerprint and the unverified synthetic user ID.

Supported inputs and limits

One armored public block up to 256 KiB decoded and 100 packets. Version 4 supported RSA, DSA, ElGamal and named-curve public packets only. Partial/indeterminate lengths and unsupported algorithms are refused. Private/secret material is refused, including hidden secret packets. No signatures, trust, expiry, revocation or ownership validation; SHA-1 is the v4 fingerprint format.

Where your input is processed

This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.

A user ID is a claim inside the key material

Decoding a name or email from a public block does not verify that person’s identity. A fingerprint identifies the parsed key, not its owner’s trustworthiness. This inspector does not establish signature validity, revocation status or a web of trust. The small synthetic RSA example illustrates parsing and is not a recommended production key.

Keep private key material out of this workflow

Only public version 4 structures in the documented subset are supported. A parser report is not an invitation to paste secret armor, and unsupported or malformed structures are refused. Read the algorithm and packet limitations before comparing outputs from a different OpenPGP format or version.

Questions about PGP Public Key Inspector

Does a matching fingerprint prove ownership?

No. Verify the fingerprint and identity through a trusted independent channel.

Can I paste my private key?

No. Private and secret material is refused and should never be pasted here.

Are signatures and revocation verified?

No. This is a packet metadata inspector.

Project manager: Tony Hines · Content updated 3 October 2026 · Report a problem