URL Parser & Builder — Free Online Tool
Paste a URL and instantly see it decomposed into protocol, hostname, port, pathname, query parameters, and fragment. Alternatively, build a URL from scratch by entering components individually. Edit any query parameter and the full URL updates live. Uses the native URL API.
100% client-side. No uploads. Your data never leaves your browser.
How to use URL Parser & Builder
- Paste a full URL into the input field.
- The URL is decomposed into protocol, host, path, query params, and fragment.
- Click any field to edit it — the full URL updates live.
- Switch to 'Build' mode to construct a URL from scratch.
Frequently Asked Questions
What URL formats are supported?
Any valid URL with a scheme (http://, https://, ftp://, etc.). The tool uses the browser's native URL constructor which follows the WHATWG URL standard.
Can I add or remove query parameters?
Yes. In builder mode, use the '+' button to add key-value pairs and the trash icon to remove them. The URL updates live.
Does this decode percent-encoded values?
Yes. Each query parameter value is shown decoded. The encoded form is preserved in the full URL output.
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