Text Encryptor & Decryptor
Encrypt and decrypt text using various cipher algorithms — all client-side, nothing uploaded.
Your Data Never Leaves Your Device
Every tool runs entirely in your browser. Nothing you type is uploaded, stored, or logged on our servers.
The Text Encryptor & Decryptor encrypts and decrypts text using multiple cipher methods — from industry-standard AES-256 down to educational ciphers like ROT13 and Caesar shift. Choose your cipher, set a password (if needed), and watch the transformation happen in real time.
All processing happens locally in your browser — your text and passwords never leave your device. Use AES-256-GCM for real security; simpler ciphers are great for learning how encryption works or obfuscating text casually.
For serious encryption: Use AES with a strong password (16+ characters, mixed case, numbers, symbols). The tool derives a cryptographic key using PBKDF2 with 100,000 iterations, then encrypts with AES-GCM and a random IV — meeting industry security standards.
FAQ
Encoding (like Base64) converts text into a different format but is easily reversible without a key. Encryption (like AES) uses a password/key to scramble data — without the correct key, it's computationally hard to reverse. Use encryption for sensitive data.
Yes, AES-256-GCM is industry-standard and used by governments and enterprises. This tool uses the Web Crypto API with proper key derivation (PBKDF2) and a random IV. Safe for real data, as long as your password is strong.
If it was encrypted with the same cipher (e.g., AES with this tool), yes — just paste the output as input and switch to Decrypt mode. The password/key must match exactly.
No — both are trivially easy to crack. ROT13 has only one possible output (no key), and Caesar has only 26 possibilities. They're useful for learning but never for real security. Use AES for anything that matters.
Vigenere is a polyalphabetic substitution cipher that uses a repeating key to shift letters differently throughout the text — harder to crack than Caesar, but still breakable by modern cryptanalysis. Good for educational purposes.
With AES, you'll get a decryption error. With simpler ciphers (Vigenere, XOR), the output will be garbage — so always keep your password safe and accurate.
No — everything runs locally in your browser. Your text and password never leave your device. The tool works even in offline mode.
This tool works with text only. For files, you'd need to encode the file to Base64 or hex first, then encrypt the text. For easier file encryption, try dedicated tools like GPG or 7-Zip.