Toolsvana→Developer Tools→Text Encryption

Text Encryption

Encrypt and decrypt text using AES-256 encryption

Text to Encrypt

Password / Key

How It Works

Encryption: Your text is encrypted using AES-256-GCM, one of the strongest symmetric encryption algorithms available. The password you provide is converted into a cryptographic key using PBKDF2 with 100,000 iterations and a random salt, making brute-force attacks extremely difficult.

Storage: The encrypted output contains the random salt (16 bytes), initialization vector (12 bytes), and ciphertext, all encoded as Base64. This means you only need the encrypted string and your password to decrypt later.

Security: All encryption and decryption happens entirely in your browser using the Web Crypto API. Your text and password are never sent to any server. Each encryption uses a unique random salt and IV, so encrypting the same text with the same password produces different output every time.

Free Online Text Encryption & Decryption Tool

Our text encryption tool lets you encrypt and decrypt sensitive text directly in your browser using military-grade AES-256-GCM encryption. Powered by the Web Crypto API, all cryptographic operations run entirely on your device, ensuring your confidential data never leaves your browser. Simply enter your text, choose a password, and receive a secure encrypted Base64 string.

The tool uses PBKDF2 key derivation with 100,000 iterations and a random salt for every encryption, making brute-force attacks extremely difficult. Each encryption also generates a unique initialization vector (IV), which means encrypting the same text with the same password produces different output every time. This level of security matches what banks and government agencies use to protect sensitive information.

Whether you need to share passwords securely, protect private notes stored in the cloud, or encrypt confidential messages before sending them via email or chat, this online encryption tool provides professional-grade security with zero technical knowledge required. The encrypted output is a portable Base64 string that can be safely shared through any channel.

Key Features

AES-256-GCM encryption, the gold standard for symmetric encryption
PBKDF2 key derivation with 100,000 iterations for strong password protection
Random salt and initialization vector generated for every encryption
100% client-side processing with the Web Crypto API, nothing sent to any server
Base64 encoded output for easy sharing via email, chat, or file storage
Password strength indicator with five levels from Weak to Very Strong
Show and hide password toggle for convenience and shoulder-surfing prevention
Separate Encrypt and Decrypt tabs for clear workflow
One-click copy to clipboard for encrypted and decrypted output
Clear error messages for wrong passwords, corrupted data, or missing inputs

How to Use the Text Encryption Tool

Select Encrypt or Decrypt: Choose the Encrypt tab to protect text or the Decrypt tab to reveal previously encrypted text.
Enter your text: Type or paste the text you want to encrypt (or the Base64 encrypted string you want to decrypt).
Set a strong password: Enter a password and check the strength indicator. Use a mix of uppercase, lowercase, numbers, and symbols for maximum security.
Click Encrypt or Decrypt: Press the button to process your text. Encryption produces a Base64 string; decryption reveals the original text.
Copy the output: Use the copy button to copy the result to your clipboard for sharing or storage.
Remember your password: The encrypted text can only be decrypted with the exact same password. Store it securely.

Use Cases

Secure password sharing: Encrypt passwords or API keys before sharing them through email, Slack, or other messaging platforms.
Cloud storage protection: Encrypt private notes, journal entries, or documents before uploading to cloud services like Google Drive or Dropbox.
Confidential communication: Protect sensitive messages in emails or chat conversations where end-to-end encryption is not available.
Configuration secrets: Encrypt database credentials, tokens, or secrets before storing them in configuration files or documentation.
Personal data protection: Encrypt personal information like account numbers, medical records, or legal documents stored digitally.
Educational purposes: Learn about modern AES encryption, key derivation, and cryptographic best practices with a hands-on tool.
Compliance requirements: Meet data protection requirements by encrypting sensitive information before transmission or storage.

Frequently Asked Questions

Is this tool free?

Yes, the text encryption tool is completely free to use with no limits on the amount of text you can encrypt or decrypt. No registration is required.

Is my data secure?

Yes. All encryption and decryption happens entirely in your browser using the Web Crypto API. Your text and password are never sent to any server, logged, or stored anywhere. The tool works even without an internet connection once loaded.

What happens if I forget my password?

The encrypted text cannot be decrypted without the exact password used during encryption. There is no password recovery option. Always store your passwords securely in a password manager.

Why does encrypting the same text produce different output each time?

Each encryption uses a randomly generated salt and initialization vector (IV). This is a security feature that prevents attackers from identifying identical plaintext by comparing ciphertext patterns.

How strong is AES-256-GCM encryption?

AES-256-GCM is considered unbreakable with current technology. It is used by governments, military organizations, and financial institutions worldwide. Combined with PBKDF2 key derivation, this tool provides professional-grade security.

Can I decrypt text encrypted by this tool using other software?

Yes, as long as the software supports AES-256-GCM with PBKDF2 key derivation using the same parameters (100,000 iterations, SHA-256 hash, 16-byte salt, 12-byte IV). The encrypted output contains all necessary parameters embedded in the Base64 string.

Tips & Best Practices

Use strong passwords: Aim for at least 12 characters with a mix of uppercase letters, lowercase letters, numbers, and special symbols for maximum security.
Check the strength indicator: The password strength meter shows five levels. Aim for Strong or Very Strong before encrypting sensitive data.
Store passwords separately: Never store your encryption password alongside the encrypted text. Use a dedicated password manager instead.
Test decryption immediately: After encrypting, copy the output and test decryption with your password to confirm everything works before deleting the original.
Use unique passwords per encryption: For maximum security, use different passwords for different encrypted texts to limit exposure if one password is compromised.
Share encrypted text safely: Send the encrypted Base64 string through one channel and communicate the password through a different channel for added security.