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Privacy utility
Encrypt / Decrypt Text
Protect short notes with a passphrase and decrypt them later. Encryption and decryption happen locally in your browser.
Browser encryption
The tool uses Web Crypto APIs available in modern browsers. It derives a key from your passphrase and encrypts text with AES-GCM.
Passphrase quality
A weak passphrase can make encrypted text easier to attack. Use a long phrase that is not reused from another account.
Output format
The encrypted text includes a version marker, key settings, salt, initialization vector, and ciphertext so it can be decrypted later with the same passphrase.
Encryption FAQ
Can the site recover my passphrase?
No. The passphrase is not stored by this page, and losing it means the encrypted text cannot be recovered here.
Is this for high-risk secrets?
This is a practical browser utility for everyday text. High-risk or regulated secrets should follow your organization's approved security process.
Why does decryption fail?
The passphrase may be wrong, the encrypted text may be incomplete, or the browser may not support the required cryptography APIs.