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Free HTTP Basic Authentication header generator tool for developers. Create Authorization headers for testing APIs and protected endpoints.
Generates HTTP Basic Authentication headers from a username and password. Enter your credentials to instantly get the complete Authorization header value in the standard 'Authorization: Basic base64encoded' format, ready to use in API requests.
HTTP Basic Auth requires base64-encoding the username:password string. Manually computing this with command-line tools or online converters adds friction when testing APIs that use Basic authentication.
API developers testing endpoints with Basic Auth, QA engineers writing API tests, and backend developers debugging authentication issues.
Enter the username in the Username field
Enter the password in the Password field
The Authorization header is generated instantly
Copy the full header or just the base64 value
admin:password123 → Authorization: Basic YWRtaW46cGFzc3dvcmQxMjM=user: → Authorization: Basic dXNlcjo=:secret → Authorization: Basic OnNlY3JldA==Only over HTTPS. The base64 encoding is not encryption — it's trivially reversible.
Yes, all characters are correctly base64-encoded.
No, this tool specifically generates Basic Auth headers.
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