MXG LabsDeveloper tools
Base64 Encoder
Encode or decode Base64, including URL-safe, with full Unicode support. Free, no sign-up, and it runs entirely in your browser — nothing you type here is sent anywhere.
Input
Output
Type something on the left.
Input—
Output—
Text is treated as UTF-8 before encoding, so anything outside plain ASCII survives the round trip. URL-safe swaps +/ for -_ and drops the padding, which is the form used in JWTs and query strings.