Sometimes you need to share a short piece of sensitive text — a note, a credential, a message — through a channel you don't fully trust. This tool encrypts text with a password using AES-GCM, a modern, well-regarded symmetric encryption algorithm, entirely within your browser using the Web Crypto API.
The encrypted output is a Base64-encoded blob that can only be decrypted with the exact same password, using the matching decrypt option on this page.
Because the encryption and decryption both happen locally in JavaScript, neither your plaintext nor your password is ever transmitted anywhere — you're responsible for sharing the encrypted text and password through separate, trusted channels.
Because everything runs locally in your browser, results appear instantly and nothing you type or upload is ever sent to a server.
Bookmark this page if you expect to use this tool regularly — it loads fast and behaves the same way every time, with no account needed.
This kind of task shows up constantly in everyday writing, coding, design, and admin work, which is exactly why a dedicated, focused tool saves so much back-and-forth.
A tool that does one job well, without a cluttered interface or unrelated features competing for attention, tends to be faster to use than a heavier all-in-one app.
If you find yourself needing this conversion or calculation often, keeping this page open in a tab is usually faster than digging through a bigger software suite's menus.
Because there's no sign-up or installation step, you can jump straight from search result to working tool in a couple of seconds.
Frequently asked questions
How strong is this encryption?
AES-GCM with a password-derived key is a solid, modern encryption scheme; overall security also depends heavily on choosing a strong, hard-to-guess password.
What happens if I lose the password?
The encrypted text cannot be recovered without the exact password — there is no backdoor or recovery mechanism, by design.