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URL Encoder/Decoder

Encode and decode URLs for web development. Handle special characters, parse URL components, and work with query parameters. All processing happens locally in your browser.

Privacy FirstNo Server Processing

URL Encoder/Decoder

Encode and decode URLs, parse URL components, and handle special characters for web development.

Understanding URL Encoding

What is URL Encoding?

URL encoding, also known as percent encoding, is a mechanism to encode information in URLs. It converts special characters into a format that can be safely transmitted over the internet.

Each encoded character is represented by a percent sign (%) followed by two hexadecimal digits representing the character's ASCII code.

When to Use URL Encoding

  • • Query Parameters: Encoding values with spaces or special characters
  • • Path Segments: File names or paths with special characters
  • • Form Data: Encoding form submissions
  • • API Requests: Safely passing parameters to APIs

Common URL Encoding Examples

Space Character

Original: "hello world"
Encoded: "hello%20world"

Special Characters

Original: "name=John&age=30"
Encoded: "name%3DJohn%26age%3D30"

Unicode Characters

Original: "café"
Encoded: "caf%C3%A9"

URL Structure & Components

Anatomy of a URL:

https://example.com:8080/path/to/page?query=value&id=123#section
Protocol | Hostname | Port | Path | Query | Fragment

Best Practices

✅ Do

  • • Always encode user input in URLs
  • • Use encodeURIComponent() for query parameters
  • • Encode special characters: spaces, &, =, %, +
  • • Test your URLs in different browsers
  • • Use proper encoding for different URL parts

❌ Don't

  • • Double-encode URLs
  • • Use encodeURI() for query parameters
  • • Forget to decode when processing
  • • Assume all characters are safe
  • • Mix encoding methods

Common Use Cases

Web Development

  • • Form submissions
  • • Query string parameters
  • • AJAX requests
  • • Dynamic URL generation

API Integration

  • • REST API parameters
  • • OAuth redirects
  • • Webhook URLs
  • • Search queries

Data Processing

  • • Log file analysis
  • • URL parsing
  • • Data migration
  • • Testing & debugging

How Our Tool Works

Our URL Encoder/Decoder tool uses JavaScript's built-in encodeURIComponent() and decodeURIComponent() functions to handle URL encoding and decoding entirely in your browser.

Tool Features

  • • Full URL encoding/decoding
  • • Component-specific encoding
  • • URL parsing and analysis
  • • Real-time processing
  • • Copy to clipboard functionality

Security & Privacy

  • • Client-side processing only
  • • No data sent to servers
  • • Complete privacy protection
  • • Works offline
  • • No data storage

The tool supports three main modes: general URL encoding/decoding, component-specific encoding for individual URL parts, and URL parsing to break down complete URLs into their constituent components.