URL Encoder & Decoder

Percent-encode or decode URL query parameters, special characters, and full URI paths securely.

URL Encoder & Decoder tool interface

About URL Encoder & Decoder

The URL Encoder and Decoder is a specialized developer utility designed to percent-encode and decode URI components, query parameters, and special characters. Web browsers and HTTP servers require reserved characters (such as spaces, ampersands, question marks, and non-ASCII symbols) to be percent-encoded to ensure correct transmission across networks. This tool allows engineers and security analysts to safely encode plain strings into valid URI components or decode percent-encoded strings back into readable text for debugging and API integration.

Safely encode special symbols, spaces, and reserved characters for HTTP query parameters, or decode percent-encoded strings back to clean text.

How to Use URL Encoder & Decoder

  1. Paste your raw URL or encoded string into the input workspace.
  2. Select whether you want to Encode or Decode the input text.
  3. View the transformed output string instantly.
  4. Copy the result to your clipboard for use in API requests or code.
  5. Clear fields to analyze a new string.

Common Use Cases

  • Preparing query string parameters and special characters for safe HTTP web requests.
  • Decoding percent-encoded strings from browser tracking URLs and server error logs.
  • Debugging web routing parameters and API endpoint payloads.

Frequently Asked Questions

What characters are percent-encoded?
Spaces, symbols, punctuation, and non-ASCII characters are converted to %XX hex codes.
Is decoding safe for malformed strings?
Yes, the decoder handles malformed percent encodings gracefully with error handling.
Does it process entire URLs or individual parameters?
It supports both full URI paths and individual query parameters.
Is client data kept private?
Yes, all encoding and decoding operations happen locally in your browser.

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