Paste a full URL and it is parsed with the browser's standards-compliant URL API into protocol, host, hostname, port, pathname and hash — the same rules your browser applies when following a link, so edge cases like default ports and IDN hosts behave correctly. Malformed input is reported instead of guessed at.
The query string is expanded with URLSearchParams into a key-value table, with percent-encoding and + signs decoded so you can read Chinese or emoji values directly. Every component and parameter has a one-click copy button. Everything runs locally in your browser — URLs are never uploaded.