Free Online URL Encoder/Decoder

Encode and decode URLs instantly.

About the URL Encoder/Decoder

This free online URL encoder and decoder handles percent-encoding — the process of converting special characters in a URL into a format that can be safely transmitted over the internet. Characters like spaces, ampersands, question marks, and non-ASCII characters are replaced with a percent sign followed by their hexadecimal equivalent (e.g., a space becomes %20).


Our URL Tool handles both encoding and decoding using JavaScript's built-in encodeURIComponent() and decodeURIComponent() functions. This is essential for web developers working with query strings, API endpoints, or any situation where URLs contain special characters that could break HTTP requests.

How to Encode and Decode URLs

  1. Enter Text: Paste the URL or text containing special characters.
  2. Choose Action: Click "Encode" to percent-encode, or "Decode" to convert back to readable text.
  3. Copy Result: Click the copy button to save the output to your clipboard.

When to Use URL Encoding

  • Query Parameters: Safely pass user input as URL query string values.
  • API Requests: Encode special characters in REST API endpoints.
  • Form Data: Prepare form values for submission via GET requests.
  • Debugging: Decode percent-encoded URLs to inspect their original content.