AES‑256 • GCM • PBKDF2‑SHA256 • File

Free Online File AES-256 Encryptor / Decryptor

Encrypt and decrypt arbitrary files locally in your browser using AES-256-GCM with PBKDF2-SHA256 key derivation. The output is a JSON payload (salt/iv/iter/ct + metadata) that is easy to store and transfer, with zero file uploads.

Input

Password PBKDF2 iterations

Encrypted JSON output

Download

How to Use

Select 'Encrypt' mode and click 'Pick file' to choose the file you want to encrypt.
Enter a strong password (letters, numbers, and symbols recommended).
Click 'Run' and wait for the encryption to complete.
Download the generated JSON file or copy the JSON content.

Tips

You must use the exact same password for decryption; otherwise, the file cannot be restored.
The generated JSON file contains encrypted data and metadata; please keep it safe.
Higher PBKDF2 iterations increase security against brute-force attacks but take longer to process.
All operations are performed locally in your browser. Your files are never uploaded.

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