Encrypt a file locally in your browser with the recipient public PGP key. Only they can decrypt it again. No upload.
Running locally on your device ...
Running locally on your device ...
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Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
When you want to send someone a confidential file, you encrypt it with their public PGP key. The result is a .asc message that, in transit, looks like nothing but gibberish to anyone - email provider, cloud storage, network onlookers. Only the recipient can make it readable, because only they hold the matching private key. There is no shared password you have to exchange secretly beforehand.
Paste the recipient public key into the field - in the ASCII-armor format that starts with the lines BEGIN PGP PUBLIC KEY BLOCK - and drop the file. The tool treats it as raw bytes, whether image, PDF, ZIP or spreadsheet, and outputs the encrypted .asc file to download. That file can be opened not only with our decryption tool, but with any OpenPGP program such as GnuPG, Kleopatra or Thunderbird.
The entire encryption runs with the locally bundled OpenPGP library (openpgp.js 6.3.1, following the OpenPGP RFC 9580 standard) in your browser - no server and no code from a foreign CDN. The actual file content is encrypted with an AES-256 session key; the recipient public key only encrypts that session key. Neither the file nor the key leaves your device. If the pasted key is not a valid public key, the tool stops with a clear message instead of producing a useless file.
| Output format | ASC |
|---|---|
| Batch processing | No |
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: You need the recipient genuine public key; the tool does not verify who a key really belongs to - that trust decision is yours. The approximate size stays visible from the encrypted message. Only the holder of the matching private key can open it.
No. Encryption runs entirely locally in the browser; the file and the key never leave your device.
The recipient public key. You encrypt with it; only the recipient can decrypt, using their private key.
Yes. The .asc file is standard OpenPGP and opens with GnuPG, Kleopatra, Thunderbird or our decryption tool.
Any type at all - the file is treated as raw bytes, whether image, PDF, ZIP or spreadsheet.