Free Tool

Free URL Parser & Query String Analyzer

Parse any URL into its protocol, host, path, query parameters, and fragment - with every query value decoded in a clean table. Free developer tool, browser-only, no signup.

Paste a URL

Paste any URL to break it into protocol, host, path, query parameters, and fragment - with each query value decoded. Everything is parsed locally in your browser.

No signup required

Free forever

GDPR compliant

Quick Answer

A URL parser breaks a URL into its component parts - protocol, hostname, port, path, query string, and fragment - and lists each query parameter with its decoded value. Paste a URL and the tool dissects it instantly in a readable table. The U2L URL Parser runs entirely in your browser. Free, no signup.

Quick Facts

Splits a URL into protocol, hostname, port, path, query string, fragment, and origin.
Lists every query parameter as a key/value pair with the value percent-decoded for readability.
Handles userinfo (user:pass@), non-default ports, multiple parameters with the same key, and empty values.
Uses the browser's native URL and URLSearchParams APIs, so parsing matches how browsers actually interpret the URL.
Adds https:// automatically if you paste a bare host, so example.com/path?q=1 still parses.
Decodes percent-encoding (%20, %2F) in query values so you read the real text, not the escaped form.
Browser-only and instant - the URL is parsed locally and never sent to U2L servers.

How to parse a URL

Paste and read the breakdown.

1
Paste the URL
Drop any URL into the field - long, parameter-heavy, or with a fragment. The tool parses it the moment you paste.
2
Read the component breakdown
See the protocol, hostname, port, path, query string, fragment, and origin laid out in a table on the left.
3
Inspect the query parameters
On the right, every query parameter appears as a key/value row with the value decoded, so you can verify exactly what the URL carries.

What is a URL Parser?

URL Parser is a tool that breaks a URL down into its individual components - the protocol, hostname, port, path, query parameters, and fragment - and presents them in a readable table. Instead of squinting at a long string to find a parameter or check the host, you paste the URL and see every part separated and labeled.

Every URL follows a structure defined by web standards: a scheme (https), an authority (hostname and optional port), a path, an optional query string of key-value pairs after the ?, and an optional fragment after the #. A URL parser splits that string along those boundaries and decodes the pieces so they are easy to read and reason about.

This is genuinely useful because URLs get long and dense. A real-world link can carry a dozen query parameters, percent-encoded values, a port, and a fragment, all run together. Reading it by eye is error-prone - you miss a parameter, misjudge where the path ends, or overlook encoding. Parsing makes the structure explicit.

Developers debugging API requests, marketers checking tracking parameters, QA engineers verifying redirects, and anyone trying to understand a suspicious or complex link use a URL parser to see exactly what a URL contains and how a browser will interpret it.

How does a URL Parser work?

The parser feeds your input into the browser's built-in URL constructor, the same engine browsers use to interpret links. That produces a structured object exposing each component: protocol, hostname, port, pathname, search (the raw query string), hash (the fragment), and origin. The tool reads those properties and lays them out in a table.

For the query string, it uses URLSearchParams to iterate the parameters. This correctly handles the tricky cases: parameters that repeat the same key, parameters with empty values, and values containing encoded characters. Each value is percent-decoded so you see the human-readable text (a space rather than %20, a slash rather than %2F).

If you paste a bare host without a scheme, the tool prepends https:// so it still parses rather than erroring, matching what a browser would do when you type an address. It also surfaces less common parts when present, like userinfo (user:password@host) and a non-default port, so nothing in the URL is hidden from you.

All of this runs in your browser with no network calls - your URL, including any tokens or sensitive parameters, never leaves your device. Because the tool uses the native URL APIs rather than a custom regex, its parsing faithfully reflects how browsers and servers will actually read the same URL.

Use Cases

How marketers, businesses, and developers use url parser.

Debugging API request URLs

Paste a long API endpoint to see its path and every query parameter decoded, making it obvious whether a value is missing, misspelled, or wrongly encoded.

Inspecting tracking parameters

See exactly which UTM tags and click IDs a marketing URL carries, and what each holds, before you reuse, clean, or audit the link.

Verifying redirects and final URLs

QA teams parse the destination of a redirect to confirm the path, parameters, and fragment landed exactly as the spec requires.

Decoding percent-encoded values

Turn an unreadable encoded query value (%7B%22id%22%3A1%7D) into its decoded form so you can see the real content at a glance.

Understanding a suspicious link

Break down an unfamiliar URL to inspect its host, path, and parameters before clicking - useful for spotting phishing or odd redirects.

Checking the host and port

Confirm a URL points at the expected hostname and port, catching environment mix-ups like a staging host or a non-standard port slipping into production.

Teaching URL structure

Show students or teammates how a URL is composed by pasting examples and watching each component separate into its labeled part.

Auditing deep links

Parse a mobile deep link or universal link to verify its scheme, host, path, and parameters match what the app expects to handle.

Preparing to edit query parameters

See the current parameter set clearly before adding, removing, or fixing values - then rebuild the URL with confidence.

URL Parser vs Alternatives

Side-by-side feature and pricing comparison with the top alternatives.

Feature	Reading by eye	Browser console	Regex parsing
Free, no signup	N/A
Component breakdown table		Manual	Manual
Decoded query-parameter table		Manual	Error-prone
Matches real browser parsing
No code required
Browser-only (no data sent)	N/A

URL Parser vs Parsing in the browser console

Developers can open the console and run new URL(str) to inspect a URL's parts. It is accurate and always available if you are already in dev tools.

This tool gives the same native-API accuracy without writing code, and it formats the components and decoded parameters into a table anyone can read - not just engineers comfortable in a console. It is faster for a quick look and shareable with non-developers.

URL Parser vs Writing a regex to split the URL

Some people parse URLs with a regular expression. It can work for simple, predictable URLs you control.

Regex URL parsing is notoriously fragile - it mishandles encoded characters, repeated keys, userinfo, and edge cases the spec allows. This tool uses the browser's standards-compliant URL engine, so it parses exactly as browsers and servers do, with none of the regex pitfalls.

Best Practices

Include the scheme when you can

Pasting the full https:// URL avoids ambiguity. The tool adds https:// to a bare host, but the original scheme matters if it is http or a custom one.

Check the decoded value, not the raw one

Use the decoded query column to read what a parameter actually contains. The encoded form hides spaces and symbols behind percent codes.

Watch for repeated keys

A URL can carry the same key more than once. The parameter table lists each occurrence, so you see all values rather than assuming there is only one.

Confirm the host and port match intent

When debugging environment issues, verify the hostname and port first - a wrong host or stray port is a common, easy-to-miss bug.

Note the fragment separately

The fragment (after #) is handled by the browser, not sent to the server. The parser separates it so you do not confuse it with a query parameter.

Pair with the UTM stripper

Once you see the tracking parameters a URL carries, use the UTM Stripper to remove them and produce a clean link.

Use it to validate generated URLs

After building a link programmatically, paste it here to confirm the parameters encoded correctly before shipping it.

Inspect links before clicking unknown ones

Parsing an unfamiliar URL reveals its real host and parameters, a quick safety check against deceptive or phishing links.

Common Mistakes to Avoid

Confusing the fragment with a query parameter

Everything after # is the fragment, not a query value, and it is not sent to the server. Treating it as a parameter leads to wrong assumptions about a request.

Misreading encoded values

A value like %2Fpath is /path once decoded. Reading the raw encoded form leads to mistakes; always check the decoded column.

Assuming one value per key

URLs can repeat a key (?id=1&id=2). Grabbing only the first value misses the rest. The table shows every occurrence so you do not overlook one.

Ignoring the port

A non-default port (example.com:8080) changes the destination. Overlooking it causes confusing 'works locally, fails in prod' style bugs.

Trusting a regex over the URL spec

Hand-rolled regex parsing breaks on valid but unusual URLs. Relying on it gives wrong components; a standards-based parser does not.

Forgetting the scheme changes behavior

http and https are different origins, and a missing scheme can be guessed wrong. Include the scheme so the parse reflects the real URL.

Technical Specifications

Components	protocol, hostname, port, path, query string, fragment, origin
Query parsing	URLSearchParams - handles repeats, empties, encoding
Decoding	Query values percent-decoded for display
Engine	Native browser URL API (standards-compliant)
Bare host	https:// added automatically when scheme is missing
Userinfo / port	Surfaced when present in the URL
Fragment	Separated from query; not sent to servers
Privacy	Parsed in your browser. No data sent to U2L.

Frequently Asked Questions

What is a URL parser?

It is a tool that splits a URL into its components - protocol, hostname, port, path, query parameters, and fragment - and decodes the query values, so you can read and understand the structure of a link at a glance instead of parsing the raw string yourself.

What parts of a URL does it show?

Protocol (https), hostname, port, path, query string, fragment, and origin, plus userinfo if present. Each query parameter is also listed separately as a decoded key/value pair.

Does it decode percent-encoded values?

Yes. Query values are percent-decoded for display, so %20 shows as a space and %2F as a slash. You read the real content rather than the escaped form, which makes debugging far easier.

Can it handle URLs with multiple identical keys?

Yes. URLs can repeat a key, like ?id=1&id=2. The parameter table lists every occurrence with its value, so you see all of them instead of just the first.

What is the difference between the query string and the fragment?

The query string is everything after the ? and is sent to the server; the fragment is everything after the # and is handled only by the browser, never sent to the server. The parser separates them clearly.

Do I need to include https:// in the URL?

It is best to, but not required. If you paste a bare host like example.com/path, the tool adds https:// automatically so it still parses - matching what a browser does when you type an address.

Is my URL sent to a server?

No. Parsing happens entirely in your browser using the native URL API. Your URL, including any tokens or sensitive query parameters, never leaves your device.

How is this more reliable than a regex?

It uses the browser's standards-compliant URL engine, the same one browsers and servers use. Regex-based parsing breaks on encoded characters, repeated keys, userinfo, and other valid cases; the native parser handles them correctly.

Can it parse deep links and custom schemes?

It parses standard web URLs reliably. Many custom schemes also parse, exposing their host and parameters, though unusual non-standard schemes may vary. For app deep links, the path and query breakdown is typically what you need.

What is the origin?

The origin is the scheme plus host plus port (https://example.com:8080). It defines the security boundary browsers use for same-origin policy, so it is useful when debugging CORS or cookie behavior.

Can I edit the parameters here and rebuild the URL?

This tool focuses on parsing and inspecting. To remove tracking parameters use the UTM Stripper, and to build tagged URLs use the UTM Builder. Together they cover inspect, clean, and create.

Why does my path look different than I expected?

The path is everything between the host and the ? or #. If it looks off, check that part of what you thought was the path is actually a query parameter or fragment - the parser draws those boundaries precisely.

Does it work on very long URLs?

Yes. The longer and more parameter-heavy the URL, the more useful parsing is. The component and parameter tables stay readable no matter how many parameters the URL carries.

Will it show an authentication user and password in the URL?

If the URL includes userinfo (user:pass@host), the parser surfaces it so you are aware it is there - a useful reminder, since embedding credentials in URLs is discouraged for security.

Is the tool free?

Yes - completely free, no signup, no limits. It runs in your browser, so there is nothing to register for and no cost to use it as often as you like.

Can it help me spot a phishing link?

It helps by exposing the real hostname and parameters, so a link disguised to look like a trusted site reveals its actual host. Combine it with the URL Expander for shortened links to see the true destination.

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Key Terms

Scheme / protocol: The part of a URL before the colon (https, http, ftp) that tells the browser how to connect to the resource.
Authority: The host portion of a URL - the hostname plus optional userinfo and port - that identifies where the resource lives.
Query string: The key-value pairs after the ? in a URL, sent to the server, used for parameters like search terms, IDs, and tracking tags.
Fragment: The part after the # in a URL. It points to a section within the page and is handled by the browser, not sent to the server.
Percent-encoding: The escaping of special characters in a URL as %XX codes (a space becomes %20). The parser decodes these for readable display.

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