HTTP Request Builder
Build and preview raw HTTP requests — method, URL, headers, and body — then export as raw format or curl.
How the HTTP request builder works
A raw HTTP request consists of a request line (METHOD /path HTTP/1.1), followed by headers, an empty line, and optionally a body. The curl export wraps the same information in a command you can run in any terminal. Use this builder to prototype API requests before writing code, or to generate curl snippets for documentation.
Private & free — this tool runs entirely in your browser.
Recommended: IndieKit — Ship your Next.js startup in days.affiliate
Related Developer Utilities tools
RegExp Tester
Test regular expressions and inspect matches locally.
Regex Visualizer
Visual regex pattern diagram with live match highlighting and capture group annotations.
Subnet Calculator
Compute CIDR subnets, usable hosts, and network ranges.
Cron Parser
Translate cron syntax into plain English.
URL Parser
Break a URL into protocol, host, path, and query parts.
HTML Previewer
Paste HTML and see it rendered live in a safe, sandboxed preview.
HTTP Status Code Reference
Search and look up every HTTP status code and its meaning.
MIME Type Lookup
Find the MIME type for a file extension, or the extensions for a MIME type.