No. All encryption and decryption are done instantly in your browser. Nothing is uploaded or stored.
Which mode should I choose?
With Password (AES): Strong encryption. Requires a password to unlock. Just Hide (Base64): Simple obfuscation. Easy to reverse, not secure.
What happens if I forget the password?
There's no way to recover an AES-locked message without the exact password. Keep it safe!
Can I lock emojis, symbols, or other languages?
Yes. The tool supports all characters, including emojis, Asian characters, and symbols.
Is this tool safe to use?
Yes. It’s open-source, works offline, and never sends data to any server.
Scope and limitations
Reviewed on August 11, 2026. Information, tool output, prices, rules, and service conditions can change or vary by device and input. Verify primary and current official sources before important use.