URL Encoder/Decoder

URL Encode

URL Decode

URL Encoding Guide

URL encoding converts special characters into percent-encoded format (%XX) for safe transmission in URLs.

Common Encodings:
Space%20 or +
!%21
"%22
#%23
%%25
&%26
+%2B
=%3D
?%3F
Use Cases
  • 🌐 Query Parameters - Safe parameter values
  • 📡 API Requests - Encode data for URLs
  • 📄 Form Submissions - POST data encoding
  • 🔗 Link Generation - Dynamic URL creation
  • 📊 Analytics - Track encoded parameters
Quick Examples
Encoding Types

Standard: Encodes spaces as + and most special characters

Component: Encodes all special characters including / ? : @ & = + $ ,

Professional URL Encoding and Decoding Tool

Safely encode and decode URLs, query parameters, and special characters for web development, API integration, and data transmission. Our tool supports both standard URL encoding and component encoding for maximum compatibility.

What is URL Encoding?

URL encoding, also known as percent encoding, converts characters that have special meaning in URLs into a format that can be safely transmitted over the internet. Special characters are replaced with a percent sign (%) followed by their hexadecimal ASCII value.

Why URL Encoding is Essential

  • Ensures data integrity when passing parameters in URLs
  • Prevents URL parsing errors with special characters
  • Enables safe transmission of user input and dynamic data
  • Maintains compatibility across different web servers and browsers
  • Prevents security issues related to URL injection attacks

Common URL Encoding Scenarios

  • Encoding query string parameters with special characters
  • Processing form data for GET requests
  • Creating safe URLs for API endpoints
  • Handling user-generated content in URLs
  • Email address and file path encoding
  • Social media sharing URL generation

Standard vs Component Encoding

Standard URL encoding is suitable for general text encoding, while component encoding provides more comprehensive encoding for URL components. Component encoding encodes additional characters like slashes and question marks, making it ideal for encoding entire URL segments.

Best Practices for URL Encoding

  • Always encode user input before including it in URLs
  • Use component encoding for URL path segments
  • Decode URLs when processing server-side parameters
  • Test encoded URLs to ensure proper functionality
  • Be aware of double-encoding issues in complex applications

URL Encoding Questions

URLs can only contain certain characters safely. Spaces, &, =, non-ASCII text — all need to be escaped as %XX hex codes. Otherwise browsers and servers might misinterpret your data.

Spaces (→%20), ampersands (→%26), equals signs in values (→%3D), question marks, hashes, and anything non-ASCII. Basically, if it has meaning in URL syntax or isn't plain ASCII, encode it.

encodeURI leaves URL-meaningful characters alone (/, ?, &). encodeURIComponent escapes everything except alphanumerics. Use encodeURIComponent for parameter values, encodeURI for full URLs. This tool does the parameter-safe version.

When displaying URLs to users, parsing query strings on the server, or debugging why your parameter looks like gibberish. The encoded form is for machines; decode it for humans.