Use the free Password Text Encryptor below: your data never leaves your browser — all work happens on your device, and nothing is uploaded to any server.
Why encrypt text with a password
Sometimes you need to send a private message through a channel you do not fully trust. An email account can be shared, a chat log can be screenshotted, and a note left on a shared computer can be read by the next person who sits down. Encrypting the text solves this cleanly: the message becomes unreadable scrambled text, and only someone who knows the password can turn it back into the original words.
This is different from simply hiding a message or writing it in code. Real encryption uses a tested algorithm, and without the password there is no shortcut back. That is why password encryption is the right choice for gift surprises, private notes, login hints, personal journal entries, and anything you want to store or send without exposing the plain words.
How this tool encrypts your text
Type your message and choose a password, then press Encrypt. The tool first derives a strong key from your password using PBKDF2 with 100,000 rounds and a random salt. It then encrypts your message with AES-GCM, a modern authenticated encryption method used by browsers, banks, and messaging apps. The result is a block of base64 text that you can copy, email, or paste anywhere.
Everything happens in your browser. Your message and your password never leave your device, and nothing is uploaded to any server. The encrypted output carries the salt and the random starting value inside it, so decryption needs only two things: the encrypted text and the same password. There is no account, no recovery key, and no back door.
How to decrypt a message
Paste the encrypted base64 text into the box, type the same password, and press Decrypt. If the password matches and the text is undamaged, your original message appears. If the password is wrong, or even one character of the encrypted text has changed, decryption fails on purpose. That failure is a feature of authenticated encryption: it proves the text is intact or it refuses to guess.
Share the encrypted text and the password through different channels when it matters. For example, send the encrypted text by email and the password by a separate message. That way, anyone who sees only one of the two learns nothing useful.
Choosing a password that actually protects you
Encryption is only as strong as the password behind it. A short or common password can be guessed by trying many candidates, so pick something long and unusual. Four or five random words work well and are easy to remember, and a sentence only you would write is better than a single dictionary word with a digit on the end.
Do not reuse a password you use for an important account. If that account is ever exposed, every message encrypted with the same password becomes exposed too. Write the password down somewhere safe if the message must survive, because there is no reset option: a forgotten password means the message stays locked forever.
What this tool is good for, and what it is not
This tool is ideal for short private notes, surprises, personal reminders, and messages you want to keep out of casual view. It is not a replacement for a full secure messaging app when you need identity checks, forward secrecy, or protection against someone watching your screen. It also cannot protect a message after you decrypt it and leave the plain text on a shared screen.
Use it with common sense: keep your device locked, close the tab when you are done, and do not paste encrypted text into a place where you would not paste the plain text either. Used that way, password encryption gives you a simple, honest layer of privacy with no software to install and nothing to trust but your own browser.