What URL parts does the parser extract?

All standard WHATWG URL components: protocol (scheme), username and password (authority info), hostname, port, pathname, search (query string), and hash (fragment). Query parameters are also decoded and listed individually for easy inspection.

Does the parser handle URL-encoded values?

Yes. Query parameter values are percent-decoded automatically so you can read the original strings. The path is shown both raw (encoded) and decoded, useful for spotting double-encoding issues.

How does this differ from the URL constructor in JavaScript?

Functionally it's the same, the parser uses the browser's native URL constructor under the hood. The tool layers on a UI that shows every component side-by-side, decodes parameters, and highlights anything unusual (non-standard ports, unusual schemes, authentication info embedded in the URL).

Can it parse non-HTTP URLs?

Yes. Any URL with a valid scheme works: ftp://, ws://, wss://, mailto:, tel:, data:, file://, and custom app schemes (myapp://). The parser detects the scheme and shows the relevant components.

What if my URL is malformed?

The parser shows the exact error message from the WHATWG URL parser, for example 'Invalid URL: missing host'. Common causes: missing scheme, unencoded special characters in the path, or trailing whitespace. Fix the input and try again.

Why does the parser show different results than my server's URL parser?

Different parsers follow different specs. Browsers and Node 20+ follow WHATWG URL (the modern, strict spec). Older Python urllib and some Java libraries follow RFC 3986 (more lenient). They disagree on edge cases like backslashes, multiple slashes, and percent-encoding of certain characters. Always check which spec your runtime uses.

Is the URL sent anywhere when I parse it?

No. Parsing is done locally with the browser's URL constructor. Your URL, including any auth credentials, tokens, or signed parameters, stays in your tab.

What standards does URL Parser validate against?

URL Parser checks compliance with Input format specification.

What are the limitations of URL Parser?

Parsing is client-side, limited by browser memory Does not handle all edge cases in malformed input

🔗

URL Parser

100% Local

Decompose URLs into protocol, host, path, query, and hash.

URL Parser

URL

Examples

Parsed Components

Protocolhttps:

Hostnamewww.example.com

Port(default)

Pathname/products

Originhttps://www.example.com

Hostwww.example.com

Hash#reviews

Raw Query String

?category=electronics&sort=price&page=2

Query Parameters3

categoryelectronics

sortprice

page2

Visual Breakdown

https://www.example.com/products?category=electronics&sort=price&page=2#reviews

protocolhostnamepathqueryhash

Try:

This tool runs entirely in your browser. Your input is never uploaded, logged, or sent to AllDevToolsHub or anyone else, and it keeps working offline once the page has loaded.

Paste any URL to break down protocol, host, port, path, query parameters, and fragment.

Overview

What is URL Parser?

Parse any URL into protocol, hostname, port, pathname, query params, hash, and auth info. Color-coded visual breakdown with decoded query parameter listing.

FAQ

Frequently Asked Questions

Reference

Technical Deep Dive

DEVELOPMENT TOOLS

URL Parser

Parse any URL into its individual components including protocol, hostname, port, pathname, query parameters, hash, and authentication info. Features a color-coded visual breakdown and decoded query parameter listing.

🧩

Every component

Breaks a URL into scheme, userinfo, host, port, path segments, query pairs, and fragment using the WHATWG URL parser.

🔤

Encoding-aware

Shows the raw and percent-decoded form of each part so you can see exactly what a server will receive.

🔒

Local

URLs — which often carry tokens or IDs in the query string — are parsed in the browser with no request.

01 Component Definition Matrix

Component	Standard Field	Description	Status
Scheme	`protocol`	The resource access protocol	Required
Host	`hostname`	DNS name or IP address	Required
Search	`searchParams`	Key-value query data	Optional
Fragment	`hash`	Client-side anchor point	Optional

02 Parsing Logic Workflow

String Sanitization Input is trimmed and checked for illegal characters before being passed to the native WHATWG constructor.

State Machine Decomposition The URL state machine identifies boundaries like ://, :, /, ?, and #.

Recursive Decoding Query parameters are extracted into a URLSearchParams object, with automatic UTF-8 percent-decoding applied to each entry.

03 URL Anatomy: RFC 3986 Deep Dive

🔗

The 8 Components of a URL A fully-qualified URL contains up to 8 components defined in RFC 3986: scheme (https), authority (user:pass@host:port), path (/api/v1/users), query (?page=1&sort=name), and fragment (#section-2). Understanding each component is essential for building correct API clients, parsing redirect URIs, and implementing OAuth callback handlers.
⚠️

Common Parsing Pitfalls The most frequent URL parsing bugs: (1) Forgetting that query parameters can contain encoded characters (%20 vs +), (2) Not handling relative URLs that lack a scheme, (3) Treating the hash fragment as part of the server request (fragments are client-only), (4) Assuming ports are always present (browsers use default 80/443).
🛡️

Security: URL Validation Matters Open redirect vulnerabilities occur when applications blindly follow user-supplied URLs. Always validate that redirect URLs match your expected domain. The URL parser helps you inspect each component to verify scheme (must be https), hostname (must match allowlist), and path (no directory traversal).

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🔧

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RJRahul JalavadiyaFounder & Lead Engineer

Last reviewed 2026-07-29

What is URL Parser?

Frequently Asked Questions

What URL parts does the parser extract?

Does the parser handle URL-encoded values?

How does this differ from the URL constructor in JavaScript?

Can it parse non-HTTP URLs?

What if my URL is malformed?

Why does the parser show different results than my server's URL parser?

Is the URL sent anywhere when I parse it?

Technical Deep Dive

Every component

Encoding-aware

Local

01 Component Definition Matrix

02 Parsing Logic Workflow

03 URL Anatomy: RFC 3986 Deep Dive

04 Related Tools

URL Encoder

URL Expander

HTTP Request Builder

Runs 100% in your browser

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