Encrypt Text
Encrypt a message or note with a password using AES-256-GCM, then paste the result anywhere. Only someone with the password can read it.
Free · No upload · 100% on your device
How to use Encrypt Text
- Type or paste your text.
- Choose the settings in the side panel. The result updates as you type.
- Copy the result or download it as a file.
Private by design. Everything you type, open or record is processed in this browser tab and is never uploaded to KittySuite.
About Encrypt Text
The encrypted text starts with ks1: and can be pasted into email, chat or a document. The recipient opens it with Decrypt Text on this site and the same password. Share the password another way, for example by phone.
Encryption happens in this browser tab with the Web Crypto API: AES-256-GCM with a key derived from your password by PBKDF2-SHA-256 (600,000 iterations). Neither the text nor the password is sent anywhere.
Encrypt Text: frequently asked questions
How do I encrypt a message with a password?
Type the message and a password, then encrypt. The result starts with ks1: and can be pasted into email, chat or a document.
How does the recipient read it?
With Decrypt Text on this site and the same password. Share the password another way, for example by phone.
How strong is it?
AES-256-GCM with a key derived from your password by PBKDF2-SHA-256 with 600,000 iterations. A weak password is still the weakest link.
Is my message sent anywhere?
No. Neither the text nor the password leaves this browser tab.