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The UrlEncode function percent-encodes a given string so that reserved characters properly encoded with ‘%’ and two hexadecimal characters.

This is useful when formatting URLs for use with HttpService/GetAsync/HttpService/PostAsync, or POST data of the media type application/x-www-form-urlencoded (Enum/HttpContentType|Enum.HttpContentType.ApplicationUrlEncoded).

For instance, when you encode the URL:


the function returns the string:



Name Type Default Description

The string (URL) to encode


Return Type Summary

The encoded string

Code Samples

HttpService UrlEncode

This code sample uses UrlEncode to turn a string into a safe, percent-encoded string that can be used in a URL as an argument. Notice how only unreserved characters (letters, numbers and -_.~) are not transformed into percent-encoded equivalents. Characters with accents are also transformed (for example é is transformed into %C3).

local HttpService = game:GetService("HttpService")
local content = "Je me suis allé au cinema." -- French for "I went to the movies"
local result = HttpService:UrlEncode(content)
print(result) --> Je%20me%20suis%20all%C3%A9%20au%20cinema%2E

New Pastebin Post

Pastebin.com is a website that allows users to paste text (usually source code) for others to view publicly. This code sample uses HttpService PostAsync and the pastebin web API to automatically create a new public paste on the website. Since pastebin’s API is designed to take data in as a URL encoded string, the code uses a for-loop to turn the dataFields table into a URL encoded string, such as hello=world&foo=bar. This is used as the HTTP POST data.

Test this code by first going to pastebin.com/api#1 and getting an API key (you’ll need a pastebin account to do this). Then, paste your unique developer API key into the field api_dev_key in the code sample’s dataFields table. Fill in any other information about the post you want to make, then run this code in a Script (not a LocalScript). If all goes well, you’ll get a URL to your new paste in the Output window (or some error string from pastebin).

local HttpService = game:GetService("HttpService")

local URL_PASTEBIN_NEW_PASTE = "https://pastebin.com/api/api_post.php"
local dataFields = {
	-- Pastebin API developer key from
	-- https://pastebin.com/api#1
	["api_dev_key"] = "FILL THIS WITH YOUR API DEVELOPER KEY";    
	["api_option"] = "paste";                                -- keep as "paste"
	["api_paste_name"] = "HttpService:PostAsync";            -- paste name
	["api_paste_code"] = "Hello, world";                     -- paste content
	["api_paste_format"] = "text";                            -- paste format
	["api_paste_expire_date"] = "10M";                       -- expire date        
	["api_paste_private"] = "0";                             -- 0=public, 1=unlisted, 2=private
	["api_user_key"] = "";                                   -- user key, if blank post as guest

-- The pastebin API uses a URL encoded string for post data
-- Other APIs might use JSON, XML or some other format
local data = ""
for k, v in pairs(dataFields) do
	data = data .. ("&%s=%s"):format(
data = data:sub(2) -- Remove the first &

-- Here's the data we're sending

-- Make the request
local response = HttpService:PostAsync(URL_PASTEBIN_NEW_PASTE, data, Enum.HttpContentType.ApplicationUrlEncoded, false)
-- The response will be the URL to the new paste (or an error string if something was wrong)