Generate & Decode HTTP Basic Auth Headers
Build RFC 7617 Authorization: Basic Base64 headers from credentials or decode tokens to inspect usernames.
About This Tool
HTTP Basic Auth Header Builder encodes username and password pairs into standard Base64 Authorization headers, cURL flags, and Fetch headers, and decodes existing tokens back into credentials.
Key Features
Bidirectional encoding and decoding
Generates HTTP header, cURL flag (-H 'Authorization: Basic...'), and Fetch headers
Safe client-side Base64 processing
How to Use This Tool
- Select 'Encode Credentials' and enter Username and Password to generate the Basic Auth header.
- Select 'Decode Header' and paste any Basic Auth header or token to retrieve the credentials.
Why Use This Tool
- Essential for testing protected REST APIs, configuring webhooks, and debugging Basic Auth issues.
- Provides ready-to-use cURL commands and JavaScript Fetch configurations.
Pro Tips
- Never use Basic Auth over unencrypted HTTP in production environments
Frequently Asked Questions
Is HTTP Basic Auth secure?
Basic Auth sends Base64-encoded credentials which are trivially reversible; it is only secure when transmitted over encrypted HTTPS connections.
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