Text Encryption Tool

Encode or decode text using Caesar cipher, ROT13, and Base64. Useful for simple obfuscation, puzzles, and learning about cryptography. Free, no signup.

Caesar cipher shifts each letter by a fixed number (e.g. A→N with shift 13). ROT13 is Caesar with shift 13 — its own inverse. Base64 encodes binary data as ASCII text and is commonly used in web development and data URIs.