HTTP Request Header Builder

Build a complete set of HTTP request headers by selecting from 30+ known header names with descriptions and common value suggestions. Generates formatted headers block, curl -H snippets, and JavaScript fetch object.

Headers block
Content-Type: application/json
curl
curl 'https://example.com/api' \
  -H 'Content-Type: application/json'
fetch (JavaScript)
fetch('https://example.com/api', {
  headers: {
    'Content-Type': 'application/json'
  }
});

Build HTTP request headers and copy them as a headers block, curl flags, or a fetch() snippet.

HTTP Request Header Builder

Build a complete set of HTTP request headers by selecting from 30+ known header names with descriptions and common value suggestions. Generates formatted headers block, curl -H snippets, and JavaScript fetch object.

Common uses

  • Build an Authorization: Bearer token header
  • Generate a full header set for a JSON API call

Frequently asked questions

Can I use HTTP Request Header Builder to build an Authorization: Bearer token header?

Yes. HTTP Request Header Builder can build an Authorization: Bearer token header, directly in your browser.

Can I use HTTP Request Header Builder to generate a full header set for a JSON API call?

Yes. HTTP Request Header Builder can generate a full header set for a JSON API call, directly in your browser.

Is my data uploaded to a server?

No. This tool runs entirely in your browser — your input is processed locally on your device and is never uploaded or stored on a server.