Data Studio
Base64 Text Encoder / Decoder
Encode text, decode Base64, inspect JWT tokens - instant, private, no server
Examples
Standard Base64
Uses + and / characters. Safe for files but needs encoding in URLs.
SGVsbG8rV29ybGQ/URL-safe Base64
Replaces + with - and / with _. No padding. Safe in URLs and filenames.
SGVsbG8tV29ybGQ_JWT Structure
Three Base64URL parts separated by dots: header.payload.signature
aaaa.bbbb.ccccEncodes and decodes as you type - no server, your data never leaves this page