Encode text and files to Base64 or decode Base64 back to original format.
All processing happens in your browserDid you know? Base64 encoding increases data size by approximately 33% because it represents 3 bytes using 4 characters. The name "Base64" comes from using 64 characters (A-Z, a-z, 0-9, +, /) to represent data. It was first described in RFC 1421 in 1993 for email encryption. Base64 is NOT encryption - it's just encoding! JWT (JSON Web Tokens) use Base64 encoding to make tokens URL-safe and readable.