WOLFRAM

Wolfram Language & System Documentation Center

URLQueryDecode["string"]

decodes a URL-style query string into a list of key-value rules.

Details and Options
Details and Options Details and Options
Examples  
Basic Examples  
Scope  
Options  
CharacterEncoding  
SortQueries  
RemoveEmptyQueries  
Applications  
See Also
Related Guides
Related Workflows
History
Cite this Page

URLQueryDecode

URLQueryDecode["string"]

decodes a URL-style query string into a list of key-value rules.

Details and Options

Examples

open all close all

Basic Examples  (2)

Decode a query string:

Wolfram Language code: URLQueryDecode["name=smiley&symbol=%3A%29"]

URLQueryDecode automatically threads over lists:

Wolfram Language code: URLQueryDecode[{"p1=a%2Bb", "p2=a%2Ab"}]

Scope  (1)

A URL wrapper is stripped from an input:

Wolfram Language code: URLQueryDecode[URL["http://www.wolfram.com/?i=1"]]

Options  (3)

CharacterEncoding  (1)

Decode a percent-encoded string using specified encoding:

Wolfram Language code: URLQueryDecode["university=E%9Atv%9As+Lor%87nd+University", CharacterEncoding -> "MacintoshRoman"]

SortQueries  (1)

Sort query parameters by using "SortQueries":

Wolfram Language code: URLQueryDecode["z=1&a=2&c=4", "SortQueries" -> True]
Wolfram Language code: URLQueryDecode["z=1&a=2&c=4"]

RemoveEmptyQueries  (1)

Remove empty parameters by using "RemoveEmptyQueries":

Wolfram Language code: URLQueryDecode["z=1&a&c=4&z=", "RemoveEmptyQueries" -> True]
Wolfram Language code: URLQueryDecode["z=1&a&c=4&z="]

Applications  (1)

Joining multiple query strings:

Wolfram Language code: URLQueryEncode[URLQueryDecode[{"zed=4&anna=1", {"sara=1&", "paul=5"}}]]
Wolfram Research (2014), URLQueryDecode, Wolfram Language function, https://reference.wolfram.com/language/ref/URLQueryDecode.html (updated 2016).

Text

Wolfram Research (2014), URLQueryDecode, Wolfram Language function, https://reference.wolfram.com/language/ref/URLQueryDecode.html (updated 2016).

CMS

Wolfram Language. 2014. "URLQueryDecode." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2016. https://reference.wolfram.com/language/ref/URLQueryDecode.html.

APA

Wolfram Language. (2014). URLQueryDecode. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/URLQueryDecode.html

BibTeX

@misc{reference.wolfram_2026_urlquerydecode, author="Wolfram Research", title="{URLQueryDecode}", year="2016", howpublished="\url{https://reference.wolfram.com/language/ref/URLQueryDecode.html}", note=[Accessed: 15-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_urlquerydecode, organization={Wolfram Research}, title={URLQueryDecode}, year={2016}, url={https://reference.wolfram.com/language/ref/URLQueryDecode.html}, note=[Accessed: 15-June-2026]}