Toggable Hitbox Expander for

local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")
local RunService = game:GetService("RunService")

local localPlayer = Players.LocalPlayer
local toggleKey = Enum.KeyCode.RightShift
local isExpanded = false
local originalSizes = {}

local function expandHitboxes()
	for _, player in pairs(Players:GetPlayers()) do
		if player ~= localPlayer and player.Character and player.Character:FindFirstChild("HumanoidRootPart") then
			local hrp = player.Character.HumanoidRootPart
			if not originalSizes[player] then
				originalSizes[player] = hrp.Size
			end
			hrp.Size = Vector3.new(10, 10, 10)
			hrp.Transparency = 0.5
			hrp.Material = Enum.Material.Neon
		end
	end
end

local function resetHitboxes()
	for _, player in pairs(Players:GetPlayers()) do
		if player ~= localPlayer and player.Character and player.Character:FindFirstChild("HumanoidRootPart") then
			local hrp = player.Character.HumanoidRootPart
			if originalSizes[player] then
				hrp.Size = originalSizes[player]
				hrp.Transparency = 1
				hrp.Material = Enum.Material.Plastic
			end
		end
	end
end

local function toggleHitboxes()
	isExpanded = not isExpanded
	if isExpanded then
		expandHitboxes()
	else
		resetHitboxes()
	end
end

-- Key detection
UserInputService.InputBegan:Connect(function(input, isProcessed)
	if not isProcessed and input.KeyCode == toggleKey then
		toggleHitboxes()
	end
end)

-- Reset on new player join or character respawn
Players.PlayerAdded:Connect(function(player)
	player.CharacterAdded:Connect(function()
		if isExpanded then
			task.wait(1)
			expandHitboxes()
		end
	end)
end)

Players.PlayerRemoving:Connect(function(player)
	originalSizes[player] = nil
end)