Request Header Builder - Construct HTTP Request Headers Online
Visually assemble standard HTTP request headers including Authorization, Content-Type, and User-Agent with instant export to cURL and JSON.
This tool runs in your browser.
Processed locally in your browser.
How to use
- 01Enter or upload the source data.
- 02Run the tool in your browser.
- 03Review, copy, or download the result.
FAQ
What header presets are available in this builder?
It includes presets for Authorization (Bearer/Basic), Content-Type, Accept headers, Cache-Control, and modern browser User-Agent strings.
What export targets can I generate?
You can export formatted header blocks directly as raw HTTP text, JSON objects, Postman header tables, or cURL -H command arguments.
Is it safe to configure private bearer tokens here?
Yes. String concatenation executes purely client-side inside your browser sandbox without submitting authentication credentials.