URL Parser & Builder

Developer

Parse URLs into components: protocol, host, path, query parameters, and fragment. Debug and analyze URL structures.

URL Components

Query Parameters

What is This Tool?

A URL parser and builder breaks down URLs into their component parts (protocol, host, port, path, query parameters, fragment) and lets you modify and reconstruct them. Essential for debugging API endpoints, redirect chains, and complex URLs with multiple query parameters.

URLs follow RFC 3986 structure: scheme://authority/path?query#fragment. The authority contains optional userinfo@, host, and :port. Query strings are key=value pairs separated by &. This tool parses, validates, and rebuilds URLs while preserving correct encoding.

Common Use Cases

API Debugging

Decompose complex API URLs to inspect endpoints, query parameters, authentication tokens, and version paths.

Redirect Chain Analysis

Parse URLs with nested redirect parameters to debug OAuth flows, SSO callbacks, and marketing UTM tracking.

SEO URL Audit

Analyze URL structure for SEO issues — trailing slashes, duplicate parameters, fragment usage, and canonical URL construction.

URL Construction

Build complex URLs by setting individual components, automatically handling encoding and parameter serialization.

Frequently Asked Questions

What URL components are parsed?

Protocol (scheme), username, password, hostname, port, pathname, query parameters (as key-value pairs), and fragment (hash).

Are encoded characters decoded?

Yes. Percent-encoded characters in each component are decoded for readability while maintaining the ability to re-encode for output.

Can I modify and rebuild URLs?

Yes. Edit any component and the tool reconstructs the full URL with proper encoding and formatting.