Base64 Encode / Decode
Convert text to Base64 and back. Toggle URL-safe output for tokens that travel in query strings or JWT segments.
Result appears here.
Runs in your browser. Your input is not uploaded to PayloadIQ.
Base64 turns arbitrary bytes into an ASCII-safe string. Standard Base64 uses +, / and = padding; the URL-safe variant swaps those for - and _ and drops padding, which is what you see inside JWTs and in query parameters.
Base64 is encoding, not encryption — anyone can decode it. Never use it to hide secrets.