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Home › Utility & Security Tools › Text Encryptor / Decryptor
Encrypt any text with AES-256 using a password you set — and decrypt it back with the same password. Fast, browser-based, and nothing ever leaves your device.
Text Encryptor & Decryptor · client-side only · zero dependencies · 100% private in-browser
Paste the text you want to protect and set an encryption password. The stronger the password, the stronger the encryption.
Click Encrypt and get a Base64-encoded ciphertext block you can store, copy, or share. Only someone with the same password can decrypt it.
Paste the ciphertext and enter the same password to recover the original text.
The tool uses AES-256-GCM (Advanced Encryption Standard, 256-bit key, Galois/Counter Mode) — a widely used, authenticated encryption algorithm considered secure for general-purpose data protection. The key is derived from your password using PBKDF2 with a random salt, so the same password produces different ciphertext each time.
AES-256-GCM is a strong, standards-compliant encryption algorithm and is appropriate for general-purpose text encryption. However, the security of the encrypted output depends entirely on the strength of the password you use. A short or common password weakens the protection significantly — use a randomly generated password of 20+ characters for anything sensitive.
There is no password recovery. AES-256 encryption with a strong password is computationally infeasible to break without the key. If you lose the password, the ciphertext cannot be decrypted. Store the password securely in a password manager.
No. All encryption and decryption runs in your browser using the Web Crypto API. Your text and your password never leave your device.
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Encrypting text for secure storage or transmission is a common need — protecting API keys you’re sharing over email, storing sensitive notes, passing credentials in a configuration, or creating a simple encrypted message for sharing. This tool uses AES-256-GCM, the same standard used in TLS, file encryption tools, and security software. The password is never transmitted — everything runs in your browser using the Web Crypto API — and the output is portable Base64-encoded ciphertext you can store or send anywhere and decrypt later with the same password.
All encryption and decryption runs in your browser. Text and passwords are never transmitted to any server.