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Authorized use only. Use this tool solely on systems, tokens, and assets you own or are explicitly permitted to test — credential extraction, signature forging, and unauthorized access are prohibited by our Acceptable Use Policy.

HTTP Basic Auth Generator

Generate Basic Auth Header

About the Basic Auth Generator

HTTP Basic Authentication sends a Base64-encoded username:password in the Authorization header. While simple, it is still used by many APIs, internal tools, and development environments.

Enter a username and password to generate the Authorization header. The tool encodes the credentials in Base64 and formats the complete header, ready to paste into curl, Postman, or your HTTP client.

How to use

  1. Enter your username.
  2. Enter your password.
  3. The Authorization header is generated instantly.
  4. Copy it into your API client or curl command.

Frequently Asked Questions

Is Basic Auth secure? ▾

Basic Auth sends credentials as Base64 (not encryption) — it is only secure over HTTPS. For production APIs, prefer token-based auth or OAuth 2.0.

What is the format? ▾

The Authorization header contains "Basic " followed by Base64(username:password). For example, admin:secret becomes Basic YWRtaW46c2VjcmV0.

How is a Basic Auth header constructed? ▾

The header is Base64(username:password) prefixed with Basic . This generator produces the exact header value to paste into curl, Postman, or REST clients — computed locally so credentials never leave your browser.

Is Basic Auth secure? ▾

Only over HTTPS — the credentials are merely encoded, not encrypted, and reversible by anyone who captures the header. Modern APIs prefer bearer tokens; Basic Auth remains common for internal tools and simple automation.

Can I use Basic Auth with special characters in the password? ▾

Yes — the colon is the only reserved separator (it cannot appear in the username). Everything else, including UTF-8, encodes cleanly since the whole string becomes Base64 bytes.