Are there file size limits?

No hard limit, but you are bounded by available memory. Modern desktop browsers comfortably handle hundreds of megabytes; multi-GB files may run out of memory. For very large files, GnuPG on the command line is more efficient.

Does the file get uploaded anywhere?

No. The page never makes a network request during file encryption. Confirm by enabling air-gap mode before you start.

What does the encrypted file look like?

A binary OpenPGP packet stream. The default extension is .pgp. Any OpenPGP client (GnuPG, Kleopatra, ProtonMail Bridge, etc.) can decrypt it with the matching private key.

Why does the browser tab go quiet during encryption?

The crypto runs in a Web Worker, which keeps the UI responsive but does not pause other tabs. If your browser tab is throttled (e.g. backgrounded), encryption will still complete — just slower than if the tab is foregrounded.

Can I encrypt a file to multiple recipients?

Yes — paste multiple armored public keys separated by blank lines. The output is decryptable by any of them.

تشفير الملفات

شفّر وفك تشفير الملفات الثنائية باستخدام تشفير المفتاح العام PGP.

كل شيء يعمل في متصفحك — بلا خادم وبلا تتبّع.