URL Encoder/Decoder

Encode or decode URLs instantly with our free online tool. Perfect for web development, SEO, and URL manipulation tasks.

URL Encoder/Decoder Tool

Maximum 10,000 characters. You can also upload a text file below.
Supported formats: TXT, CSV, JSON, XML, HTML

Enter your URL or text above and click Encode or Decode

What is URL Encoding?

URL encoding, also known as percent-encoding, is a mechanism to encode information in a Uniform Resource Identifier (URI) under certain circumstances.

URLs can only be transmitted over the Internet using the ASCII character-set. Since URLs often contain characters outside the ASCII set, the URL has to be converted into a valid ASCII format.

URL encoding replaces unsafe ASCII characters with a "%" followed by two hexadecimal digits corresponding to the character values in the ISO-8859-1 character-set.

How Does URL Encoding Work?

Characters that need to be encoded are replaced by a percent sign (%) and a two-digit hexadecimal value that represents the character in the appropriate ISO character set.

Common Examples:
  • Space → %20 or +
  • ! → %21
  • " → %22
  • # → %23
  • $ → %24
  • % → %25
  • & → %26

Allowed URL Characters

According to RFC 1738, only a small set of characters are allowed to be used in a URL:

Letters: A-Z, a-z
Numbers: 0-9
Special: - _ . ~
Reserved: ! * ' ( )
Unsafe: " # % { } | \ ^ [ ] `

Common Use Cases

  • Web Development: Encoding form data and query parameters
  • API Integration: Preparing URLs for HTTP requests
  • SEO: Creating clean, readable URLs
  • Data Processing: Handling special characters in URLs
  • Security: Preventing URL injection attacks
  • Analytics: Tracking URLs with special parameters

Free Online URL Encoder/Decoder Tool

Why Use Our URL Encoder/Decoder?

Our free online URL encoder/decoder tool provides instant, accurate results for all your URL encoding and decoding needs. Whether you're a web developer, SEO professional, or just need to work with URLs, our tool makes it simple and fast.

  • ✅ Instant encoding and decoding
  • ✅ Support for large text files
  • ✅ Mobile-responsive design
  • ✅ No registration required
  • ✅ 100% free to use

Features & Benefits

Our URL encoder/decoder tool is designed with user experience in mind, offering powerful features in a simple, intuitive interface.

  • 🚀 Fast processing of large URLs
  • 📱 Works on all devices and browsers
  • 🔒 Secure - no data stored on servers
  • 📋 One-click copy to clipboard
  • 📁 File upload support
  • 🎯 Perfect for developers and SEO experts