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🔑 HTTP Basic Auth Encoder

Client-side HTTP Basic Auth encoder and decoder with real-time Base64, Authorization header, curl, and fetch snippets — supports UTF-8 and reverse decoding

🔒 All encoding and decoding runs locally in your browser — credentials are not uploaded by the tool. HTTP Basic Auth (RFC 7617) encodes username:password in Base64 for the Authorization header.

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Free online HTTP Basic Auth encoder and decoder — client-side. Enter username and password for real-time Base64 encoding, Authorization header, curl command, and JavaScript fetch code snippets. Decode by pasting an Authorization header, Basic prefix string, or raw Base64. Full UTF-8 support. Credentials are not uploaded by the tool.