Is file encryption secure?

Yes. AES-256-GCM is a military-grade encryption standard used by governments and banks worldwide. Keys are generated locally in your browser. Files never leave your device. Keep your password safe — there's no recovery.

Is the encrypted file larger?

Slightly. AES-GCM adds a 16-byte IV, 16-byte salt, and small metadata (~28 bytes total). The size increase is typically under 1%.

File Encryption Tool - AES-256 Online Encryption

📤 Select File

Drag & drop file here, or click to select

Any file type, max 500MB

📖 FAQ

Is this secure?

Yes. AES-256-GCM is military-grade encryption. Keys are generated locally. Files never leave your device. Keep your password safe — no recovery.

What file types are supported?

Any file type: documents, images, videos, archives. Output is .encrypted file, only restorable with the same password.

What if I forget my password?

No recovery possible. AES-256 has no backdoor. Use a password manager.

Will the file get bigger?

Slightly. ~28 bytes added (IV+salt+metadata), typically under 1% increase.

🔒 File Encryption Tool