Encrypt, decrypt, encode, or decode text instantly using AES, Base64, Caesar Cipher, ROT13, and URL encoding.
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How to Use the Encryption Tool
The Encryption & Decryption Tool helps you quickly transform text using several common methods.
You can use it for AES encryption, Base64 encoding, Caesar Cipher,
ROT13, and URL encoding directly in your browser.
To use the tool, first choose a method from the dropdown. If you select AES, enter a secret key.
For Caesar Cipher, you can choose the shift value. Then enter your text and click either
Encrypt / Encode or Decrypt / Decode.
This tool is useful for developers, students, and quick browser-based tasks. It can help with readable data conversions,
testing encoded values, simple text transformation, and learning how common encoding and cipher methods work.
Supported Methods
AES: Real symmetric encryption using a secret key.
Base64: Text encoding, useful for data transport but not for secrecy.
Caesar Cipher: A simple letter shift cipher, mainly for learning and basic puzzles.
ROT13: A fixed Caesar-style shift of 13 letters.
URL Encoding: Converts special characters into URL-safe format.
Important Note
Base64, ROT13, and Caesar Cipher are not secure ways to protect sensitive data.
They are useful for formatting, learning, or simple transformations. For real protection, use strong encryption like AES
and proper backend security practices.
Frequently Asked Questions (FAQ)
This tool supports AES encryption, Base64 encode/decode,
Caesar Cipher, ROT13, and URL encode/decode.
No. A secret key is required only for AES. The other methods do not need a key.
No. Base64 is an encoding system, not encryption. It changes data format, but it does not securely protect information.
No. Caesar Cipher is very simple and easy to reverse. It is useful for education, puzzles, and demonstrations, not for real security.
No. The processing runs directly in your browser, which helps keep your text local on your device.