Encode and decode URLs

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URL Encoder and Decoder
Our URL Encoder/Decoder is a free online tool that enables you to convert special characters to URL-safe formats and decode URL-encoded strings back to their original form. This essential web development utility ensures your URLs and query parameters work correctly across all systems.
What is URL Encoding?
URL encoding, also known as percent-encoding, is a mechanism for encoding information in a Uniform Resource Identifier (URI). It replaces unsafe ASCII characters with a "%" followed by two hexadecimal digits. For example, a space becomes "%20" and a plus sign becomes "%2B".
Key Features
  • Real-time Encoding/Decoding - See results as you type with no delay.
  • Support for All URL Components - Encode query parameters, path segments, and full URLs.
  • Special Character Handling - Properly encode symbols, spaces, and non-ASCII characters.
  • Form Encoding Support - Option for application/x-www-form-urlencoded format (+ for spaces).
  • Local Processing - All encoding/decoding happens in your browser, ensuring data privacy.
Why URL Encoding Matters
URLs can only contain a specific set of characters from the ASCII character set. Characters outside this set, or characters with special meanings in URLs (like ?, &, #, =), must be encoded to be transmitted correctly. Without proper URL encoding:
  • Spaces and special characters can break URL functionality
  • Non-ASCII characters (like é, ö, 漢) might cause errors
  • Query parameters with symbols (like & or =) can be misinterpreted
  • API calls might fail or return unexpected results
Common Uses
  • Web Development - Create properly formed URLs with query parameters.
  • API Integration - Ensure API calls with complex parameters work correctly.
  • Form Submissions - Properly encode form data for server processing.
  • QR Code Generation - Prepare URL parameters for inclusion in QR codes.
  • URL Debugging - Decode URL parameters to troubleshoot issues.
Our URL encoder and decoder tool is an essential resource for web developers, QA testers, and anyone working with web addresses containing special characters or internationalized content.