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URL Encoder / Decoder

Safely encode or decode URLs and query parameters. Handles complex character sequences correctly.

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About the URL Encoder and Decoder

The Zadein URL Encoder converts special characters in a string into percent-encoded format for safe use in URLs. The decoder reverses this process, converting encoded URLs back to readable text.

How to use

  1. 1Paste your text or URL into the input field.
  2. 2Click Encode to convert special characters to percent-encoding, or Decode to reverse.
  3. 3Copy the resulting output.

Common use cases

  • Encode query string parameters before appending them to a URL.
  • Decode a percent-encoded URL to read its original content.
  • Fix URLs containing spaces or special characters that cause request errors.
  • Encode data for use in a form POST body or redirect URL.

Frequently asked questions

What characters get encoded?

Characters that are not allowed in URLs such as spaces, ampersands, equals signs, and non-ASCII characters are converted to their percent-encoded equivalents.

What is the difference between URL encoding and Base64 encoding?

URL encoding makes a string safe for use in a URL by encoding specific characters. Base64 encodes binary data as ASCII text. They serve different purposes.

Should I encode the entire URL or just the parameters?

Typically you encode individual query parameter values, not the entire URL. Encoding the full URL including slashes and colons would break its structure.