Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 strings. Supports UTF-8. Runs entirely in your browser.
Output will appear here…
Common uses in networking and security
Base64 is used in HTTP Basic Authentication headers (Authorization: Basic dXNlcjpwYXNz), JWT tokens (header and payload sections), and embedding binary data in JSON or XML. It's encoding, not encryption — anyone can decode it.