What is URL Parser?
The URL Parser breaks a URL into its components — scheme, host, port, path, query parameters, and fragment — using the browser's built-in URL API, which implements the WHATWG URL Standard. The underlying grammar of URIs is defined in RFC 3986.
Paste any URL and the tool shows each structural piece plus a table of decoded query parameters, making it easy to debug links, redirects, and API endpoints. If you omit the scheme, it assumes https:// so partial inputs still parse.
Parsing happens in your browser; nothing is uploaded.
Why Use This Tool?
Reading a long URL by eye is error-prone, especially with many query parameters, encoded values, or an embedded fragment. Decomposing it into labeled parts makes it obvious what host you are hitting and exactly which parameters are set.
- Inspect every component of a URL at once.
- See decoded query parameters in a table.
- Debug redirects, tracking links, and API calls.
- Parse partial URLs without a scheme.
How Does This Tool Work?
The tool checks whether the input begins with a scheme; if not, it prepends https:// so relative-looking hosts still parse. It then constructs a URL object, which normalizes the input and exposes protocol, username, password, hostname, port, pathname, search, hash, and origin.
Query parameters are read from the URL's searchParams, which automatically percent-decodes each key and value, and are presented as a key/value table.
Understanding Your Results
You get each component individually. The origin combines scheme, host, and port; the pathname is the path after the host; search is the raw query string (with leading ?), and hash is the fragment (with leading #). The parameter table shows decoded values, so %20 appears as a space.
If parsing fails, the string is not a valid URL even after assuming https://. Note that the WHATWG parser normalizes some inputs — for example lowercasing the host and resolving default ports — so the parsed output may differ slightly from the raw text.
Why Tracking This Matters
URLs carry routing, authentication redirects, and analytics parameters. Being able to inspect them precisely helps diagnose broken links, unexpected redirects, and misencoded parameters that would otherwise be hard to spot.
Benefits of Using URL Parser
- Full component breakdown
- Decoded query-parameter table
- WHATWG-standard parsing
- Assumes https:// for partial input
- Reveals origin, path, and fragment
- Runs privately in your browser
How Is the Result Calculated?
There is no math. The tool delegates to the URL constructor, which parses per the WHATWG URL Standard, and enumerates searchParams to build the parameter table. Percent-decoding of parameters is handled by the standard API.
Tips for Better Results
- Include the scheme for the most accurate parse; otherwise https:// is assumed.
- Use the parameter table to confirm encoded values decode as expected.
- Remember the parser normalizes host casing and default ports.
- Use the URL Encoder to fix parameters that look wrong.
- The fragment (after #) is never sent to servers by browsers.
Standards and References
Conclusion
The URL Parser decomposes any URL into its components and decoded parameters using the standard browser URL API.
It is a quick, private way to debug links, redirects, and API endpoints and to confirm exactly what a URL contains.