Text Encryption & Decryption Tool

Free Online Text Encryption & Decryption Tool

Securely encrypt and decrypt text using simple ciphers like Caesar Cipher, Vigenère Cipher, and Base64. Perfect for students learning cryptography, developers securing data, or anyone exploring text encoding. This free tool offers instant processing, history tracking, and clipboard support, all in a privacy-focused interface.

Encrypt or Decrypt Text

Result

History

How to Use the Encryption & Decryption Tool

Our Text Encryption & Decryption Tool makes securing and decoding text simple. Follow these steps to use it effectively:

  1. Enter Text: Type or paste your text into the input area.
  2. Select Cipher: Choose Caesar Cipher, Vigenère Cipher, or Base64 from the dropdown.
  3. Provide Key (if needed): For Caesar, enter a numeric shift (1-25). For Vigenère, enter a keyword. Base64 doesn’t require a key.
  4. Encrypt or Decrypt: Click "Encrypt" to encode or "Decrypt" to decode the text.
  5. View Result: The processed text appears below, ready for copying.
  6. Copy to Clipboard: Use the "Copy to Clipboard" button to copy the result.
  7. Track History: Conversions are logged with cipher type and key for easy reuse.
  8. Clear Input: Click "Clear" to reset the tool.

Note: All processing is done locally in your browser for privacy. Ensure valid keys for accurate decryption.

Frequently Asked Questions (FAQ)
What is the Text Encryption & Decryption Tool?
This tool encrypts and decrypts text using simple ciphers like Caesar, Vigenère, and Base64. It’s ideal for students learning cryptography, developers encoding data, or anyone exploring text security in a user-friendly interface.
What ciphers are supported, and how do they work?
  • Caesar Cipher: Shifts each letter by a fixed number (1-25), wrapping around the alphabet (e.g., shift 3: "A" → "D").
  • Vigenère Cipher: Uses a keyword to shift letters variably, based on the keyword’s letters (e.g., keyword "KEY" shifts "A" differently per position).
  • Base64: Encodes text into a 64-character alphabet (A-Z, a-z, 0-9, +, /) for data transfer; decoding reverses it.
What kind of key is required?
Caesar Cipher needs a numeric shift (1-25). Vigenère Cipher requires a keyword (letters only). Base64 doesn’t use a key. Invalid keys (e.g., non-numeric for Caesar) will prompt an error.
Is my text secure?
All processing is local in your browser; no data is sent to servers, ensuring privacy. Note that these are simple ciphers for educational use, not suitable for high-security needs (use AES or RSA for sensitive data).
Can I encrypt/decrypt non-English text?
Caesar and Vigenère work best with English letters (A-Z); non-English characters may remain unchanged or cause errors. Base64 supports any text, including Unicode, as it encodes raw data.
How is the history log stored?
The history log is saved in your browser’s local storage, persisting until you clear browser data. Each entry includes the cipher type, key, and result for easy reference.
Can I use this for coding projects?
Yes, developers can encrypt text for secure storage or transmission (e.g., Base64 for API payloads). Copy results directly into your code. For production, use stronger encryption libraries.
Is the tool accessible?
Yes, it features high-contrast visuals, keyboard navigation (Tab to focus, Enter to activate), and screen-reader-compatible labels. Feedback is welcome to enhance accessibility.
What happens if I enter an invalid key?
The tool validates keys (e.g., numeric for Caesar, letters for Vigenère). Invalid inputs trigger a notification, and no result is shown until corrected.

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About Our Text Encryption & Decryption Tool

Protecting or encoding text doesn’t need to be complex. Our Text Encryption & Decryption Tool offers simple ciphers—Caesar, Vigenère, and Base64—for quick, educational, or lightweight security tasks. Whether you’re a student exploring cryptography, a developer encoding data, or a curious user, this tool provides instant results with a clean interface.

With local processing for privacy, history tracking, and clipboard support, it’s built for ease and efficiency. No downloads or accounts required—just input your text and start encrypting. Discover the power of ciphers today with our free tool.