Encode “Hello, мир 🌍” as UTF-8 Base64
Reproduce one multilingual text conversion with exact bytes, Base64 output and round-trip checks.
Open exampleExecutable text tuples
Base64Lens examples with exact bytes
Run one multilingual UTF-8 case and one standard-versus-URL-safe case.
Convert “Hello>?” with standard Base64 and base64url
Use one seven-byte input to expose both alphabet substitutions and the two padding characters.
Open example