Text Encrypter / Decrypter
Encrypt and decrypt text with AES-256-GCM using a passphrase, entirely in your browser. Uses PBKDF2 key derivation. Nothing is uploaded.
Uses the browser's native Web Crypto API (AES-GCM, PBKDF2) — no external libraries.
How to use this tool
- Type or paste the text to encrypt.
- Enter a strong passphrase.
- Click Encrypt; copy or download the encrypted blob. To decrypt, paste the blob, enter the passphrase, and click Decrypt.
Encrypt and decrypt text with AES-256-GCM using a passphrase, entirely in your browser. Uses PBKDF2 key derivation. Nothing is uploaded.
Frequently asked questions
- How strong is the encryption?
- AES-256-GCM with 100,000 PBKDF2-SHA256 iterations — the same approach used in professional password managers.
- Can I decrypt on another device?
- Yes — paste the ENC1:… blob, enter the same passphrase, and click Decrypt in any modern browser.