NymGram
Security ToolsURL Encoder/Decoder

URL Encoder/Decoder

Encode text for safe inclusion in URLs (percent-encoding) or decode percent-encoded URLs.

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Overview

The URL Encoder/Decoder tool helps you convert strings into a format suitable for use in URLs (percent-encoding) and decode such URLs back into their original form. This is essential because URLs can only contain a limited set of characters; special characters need to be encoded.

Use Cases

  • Encoding query parameters for URLs to ensure special characters (like spaces, &, ?, =) are handled correctly.

  • Decoding URLs to understand the original parameters or path segments.

  • Preparing text to be part of a URL path segment.

  • Working with web APIs that require URL-encoded data.

How It Works

For encoding, enter your text into the input area and click "Encode URL". The tool uses encodeURIComponent(), which encodes all characters except for A-Z a-z 0-9 - _ . ! ~ * ' ( ). For decoding, paste a percent-encoded URL or string segment and click "Decode URL". The tool uses decodeURIComponent(). The result appears in the output area.

Tips for Better Usage

  • encodeURIComponent() is generally preferred for encoding query string parameters as it encodes more characters than encodeURI().

  • Percent-encoding replaces unsafe ASCII characters with a "%" followed by two hexadecimal digits corresponding to the character's ASCII value.

  • Spaces are typically encoded as %20 or sometimes + (though encodeURIComponent uses %20).

Frequently Asked Questions