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URLDecode
Last update:
May 18, 2026
Description
Decodes a URL-encoded string.
Returns
A copy of a string, decoded.
Category
Function syntax
URLDecode(urlEncodedString[, charset])See also
URLEncodedFormat; Tags and functions for globalizing applications in the Developing ColdFusion Applications
History
ColdFusion MX 6.1: Changed the default charset: the default charset is the character encoding of the URL scope.
ColdFusion MX:
- Changed Unicode support: ColdFusion supports the Java UCS-2 representation of Unicode character values 0-65535. (Earlier releases supported ASCII values.)
- Added the charset parameter.
Parameters
Parameter | Description |
urlEncodedString | URL-encoded string or a variable that contains one. |
charset | The character encoding in which the URL is encoded. Optional.The following list includes commonly used values:
|
Usage
URL encoding formats some characters with a percent sign and the two-character hexadecimal representation of the character. For example, a character whose code is 129 is encoded as %81. A space is encoded with a plus sign. Query strings in HTTP are always URL-encoded.
Example
<cfscript>
bookName ="Hound of Baskervilles";
myURL='http://site.com?book=#EncodeForURL(bookName)#';
WriteOutput(myURL); // http://site.com?book=Hound+of+Baskervilles
writeOutput(urlDecode(myURL)) // http://site.com?book=Hound of Baskervilles
</cfscript>
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