Base64 String Encode / Decode

Base64 encoding is widely used to represent binary data or safe text across channels that only reliably support ASCII. This tool provides instant, UTF-8 safe Base64 encoding and decoding. It properly handles emojis and international characters which often break standard atob/btoa implementations.

Common Use Cases

• Encoding credentials for Basic Authentication headers.
• Decoding payloads from JWTs or API responses.
• Safely embedding text data within JSON or XML documents.