Keep an Encrypted Journal Entry

Encrypt personal writing so only you can read it back.

Nid oes angen mewngofnodi

Text to encrypt

Password

Strong, standard encryption: AES-256-GCM with a key derived from your password via PBKDF2 (250,000 iterations, SHA-256). Each message uses a fresh random salt and IV.

The password is never stored or sent anywhere — everything runs in your browser. If you lose the password, the message cannot be recovered. Share the encrypted text and the password through separate channels.

journaling tips

📓

Paste a private entry, encrypt it with a memorable password, and store the ciphertext anywhere.

🔓

Decrypt it later here by pasting the text and entering the same password.

🔑

Use a strong, memorable passphrase — long word combinations beat short complex ones.

🔒

Your writing stays on your device.

Sut Mae'n Gweithio

Ewch i mewn

Enter your data into the tool above. Everything stays local to your browser.

Proses

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Lawrlwythwch

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

Pam defnyddio ein un ni?

✓Hollol rhad ac am ddim - dim costau cudd, byth

✓Nid oes angen cyfrif, e-bost na mewngofnodi

✓Nid yw ffeiliau byth yn gadael eich dyfais

✓Dim cyfyngiadau maint ffeil o gwbl

✓Dim dyfrnodau ar unrhyw allbwn

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🤝

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🗒️

Encrypt a Private Note

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🔑

Send Credentials Securely

Encrypt API keys or logins before sharing with a t

🎓

Learn How Encryption Works

See real AES-256-GCM encryption in action.

Cwestiynau Cyffredin

Back to Text Encryption