URL Parser

URL Parser Tool
Home

URL Parser Tool

Analyze and break down URLs into their component parts. Understand the structure of any URL and extract query parameters easily.

Parse URL

Try these examples:

E-commerce URL with query parameters and fragment
URL with subdomain, TLD, port and path
API URL with path parameters and query string

URL Analysis Results

URL Visualization
URL Components
Component Value Action
Query Parameters
Parameter Value Action

Understanding URLs

URL Structure

A URL (Uniform Resource Locator) consists of several components that define how to locate a resource on the internet:

protocol          port
   ↓              ↓
https://www.example.com:8080/path/to/resource?name=value&name2=value2#section
        ↑     ↑     ↑                ↑                      ↑
   subdomain  domain TLD            path              query string  fragment
                 ↑_____________________↑
                          ↓
                        host
URL Components Explained
  • Protocol: Defines how data is transferred (http, https, ftp, etc.)
  • Subdomain: Optional part before the main domain (www, blog, shop, etc.)
  • Domain: The main name of the website (example, google, github, etc.)
  • TLD: Top-level domain (.com, .org, .net, .io, etc.)
  • Port: Optional port number for specific services (default: 80 for HTTP, 443 for HTTPS)
  • Path: Location of the resource on the server
  • Query Parameters: Additional data sent to the server (after ?)
  • Fragment: Anchor pointing to a specific section on the page (after #)
Query Parameters

Query parameters are added to the URL after a question mark (?) and separated by ampersands (&):

  • Format: ?name=value&name2=value2
  • Used to send data to the server
  • Common in search, filtering, and passing state information
  • Values are usually URL-encoded (spaces become %20, etc.)
Common URL Issues
  • Malformed URLs: Missing protocol, invalid characters
  • Special Characters: Need to be properly encoded
  • Length Limitations: Browsers limit URLs to around 2000 characters
  • Case Sensitivity: Domain names are case-insensitive, but paths may be case-sensitive
  • Redirect Issues: Wrong protocol or www vs. non-www URLs
URL Security Considerations
  • HTTPS: Always use secure protocols for sensitive data
  • Parameter Exposure: Don't put sensitive data in query parameters
  • URL Encoding: Properly encode special characters to prevent injection attacks
  • Path Traversal: Be careful with paths containing "../" which could access parent directories
Working with URLs in JavaScript

JavaScript provides URL and URLSearchParams objects to easily parse and manipulate URLs:

  • new URL(urlString) to create a URL object
  • url.searchParams to access query parameters
  • url.searchParams.get('name') to get a specific parameter
  • url.searchParams.has('name') to check if a parameter exists
  • url.searchParams.append('name', 'value') to add a parameter