URLQueryEncode
URLQueryEncode[<|key1 -> val1, key2 -> val2, ...|>] creates a URL-style query string from an association of keys and values.
URLQueryEncode[{param1 -> val1, param2 -> val1, ...}]creates a query string from a list of rules.
Examples
URLQueryEncode[<|"name" -> "John", "age" -> "30"|>]
(* "name=John&age=30" *)Please visit the official Wolfram Language Reference for more details.