HTTP Basic Auth Generator
Generate HTTP Basic Authorization headers from username and password. Create Base64 encoded credentials instantly.
About HTTP Basic Auth Generator
Our free online HTTP Basic Auth Generator is a simple yet powerful tool that creates HTTP Basic Authorization headers from your username and password. It encodes the credentials using Base64 and generates the complete Authorization header value ready to use in API requests.
HTTP Basic Authentication is one of the simplest authentication schemes built into the HTTP protocol. The client sends the username and password encoded in Base64 format in the Authorization header with each request. While convenient, it should only be used over HTTPS connections.
This tool processes your input entirely in the browser using JavaScript, ensuring your credentials never leave your device. Generate Base64 encoded credentials and full Authorization headers instantly for testing APIs, configuring HTTP clients, or debugging authentication issues.
The tool displays both the raw Base64 encoded credentials and the complete Authorization header value, making it easy to copy the exact format you need for your API requests or configuration files.
Features
Instant Generation
Generate Base64 encoded credentials and Authorization headers instantly with a single click.
Dual Output
Display both the raw Base64 credentials and the full Authorization header value simultaneously.
Unicode Support
Properly handles Unicode characters in usernames and passwords for international applications.
One-Click Copy
Copy the Authorization header directly to clipboard for immediate use in API clients.
Sample Data
Quickly test the tool with sample credentials using the Sample button.
Privacy First
All processing happens in your browser. Your credentials never leave your device.
How to Use
Enter Username
Type the username for your HTTP Basic Authentication.
Enter Password
Type the password that will be combined with the username and Base64 encoded.
Generate Header
Click the Generate Auth Header button to create the Base64 credentials and Authorization header.
Copy the Result
Click Copy Header to copy the complete Authorization header value to your clipboard.
Frequently Asked Questions
What is HTTP Basic Authentication?
HTTP Basic Authentication is a simple authentication scheme built into the HTTP protocol. The client sends requests with an Authorization header containing the word "Basic" followed by a space and a Base64-encoded string of username:password.
Is Basic Authentication secure?
Basic Authentication encodes credentials using Base64, which is easily decoded. It should only be used over HTTPS (TLS/SSL) connections to ensure the credentials are encrypted during transmission. For higher security, consider using OAuth 2.0 or token-based authentication.
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It converts every 3 bytes of data into 4 printable ASCII characters. Base64 is used in Basic Authentication to safely transmit credentials over HTTP.
How do I use the generated header?
Add the generated Authorization header to your HTTP requests. For example, in curl: curl -H "Authorization: Basic base64string" https://api.example.com. In Postman, select Basic Auth and enter the username and password directly.
Does this tool support Unicode characters?
Yes, this tool properly handles Unicode characters in both usernames and passwords by encoding them as UTF-8 before Base64 encoding, ensuring compatibility with international applications.
Is this Basic Auth generator free?
Yes, it is completely free to use with no registration, sign-up, or limits. You can use it as many times as you need for personal, educational, or commercial projects.