Open PGP files in your browser

The signatures beside software downloads, the keys people share and the files they encrypt with GnuPG. Check one right here, without a terminal. Nothing leaves your device.

Or drop it anywhere on this page

What you'll see

Your OpenPGP file opens as what it is: a signature checked against the file and key beside it, a key and its people, or who an encrypted file is for.

release-1.4.tar.gz.asc

OpenPGP signature • Oct 29, 2026 • 833 bytes

  • Signatures checked • With the key dropped beside them
  • Keys • Their people, subkeys and expiry
  • Encrypted files • Who can open them, nothing decrypted
  • The file a message signs opens in its own viewer

About PGP

Phil Zimmermann released PGP in 1991, and the IETF made it the OpenPGP standard that GnuPG, Proton Mail, Thunderbird and Kleopatra use. Linux distributions, Apache and Tor sign their downloads with a .asc or .sig beside each file.

An OpenPGP file is a run of packets, as bytes in .gpg, .pgp and .sig files or as armored text in .asc ones: a key with its people and subkeys, a signature, a message signed in clear text, or a file encrypted to the keys of its recipients.

Drop a signature with the file it signs and the key that made it, and Filepeek checks it. A key shows its people, subkeys, fingerprints and when it expires, and an encrypted file shows the keys it's for, named when their keys are dropped with it. Nothing is decrypted.

OpenPGP file

Format

MIME type
application/pgp-signature
Made by
Phil Zimmermann
Released
1991

Inside the file

Holds
Keys, signatures or messages
Armor
Base64 text in .asc files
Standard
OpenPGP
Made by
GnuPG and others

Opens in every browser

Browsers download PGP files or show armored ones as text. Filepeek checks signatures and reads keys in Chrome, Edge, Firefox and Safari.

  • YouChromeOpens through Filepeek
  • YouEdgeOpens through Filepeek
  • YouFirefoxOpens through Filepeek
  • YouSafariOpens through Filepeek

Questions

How do I check a .asc or .sig signature?

Drop the signature together with the file it signs and the project's public key, or a folder with all three. Filepeek says who signed it and whether it holds.

Can it decrypt a .gpg file?

No. That takes the recipient's private key. Filepeek shows which keys it's encrypted to, so you know whose it is.

How do I see a key's fingerprint?

Drop the key, armored or not. Each key and subkey shows with its fingerprint, its people and when it expires.

Is my file uploaded?

No. The file opens inside your browser and never leaves your device.

More other formats

All supported file types

Opens in a new tab

EXIF

Verify

License

Signature