Free AES Text Encryption Tool — Encrypt & Decrypt Messages Online
Encrypt any message with AES-GCM directly in your browser. Share the encrypted URL — only someone with the password can decrypt it. Zero server involvement.
Best For
Use Encrypt & Decrypt when you need to inspect, convert, compare, or package technical material quickly. The page is designed around a focused workflow: bring in the code, data, markup, URL, or technical file, make the adjustment or check, then copy or download the result for your repo, ticket, documentation, or handoff.
Most work happens locally in your browser, which keeps files and text on your device and makes quick repeat checks practical. Review the output, then copy or download the result for your repo, ticket, documentation, or handoff.
Common workflows
- Send Encrypted Messages Online
- Protect Journalist Sources
- Secure Legal Communications
- HIPAA-Compliant Messaging
Features
AES-GCM Encryption
Uses the Web Crypto API with AES-256-GCM — the same standard used in modern secure messaging apps.
Shareable Encrypted URLs
The encrypted ciphertext is embedded in the URL so you can share it as a link.
Zero Knowledge
Encryption and decryption happen entirely in the browser. The server never sees your plaintext or your password.
How It Works
Enter the text you want to encrypt.
Choose a passphrase. The recipient will need this to decrypt.
Click encrypt to generate a ciphertext URL.
Send the URL to your recipient along with the password (via a separate channel).
Frequently Asked Questions
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