> ## Documentation Index
> Fetch the complete documentation index at: https://docsuncv2.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# getscriptbytecode

Returns the compiled Luau bytecode of a `LocalScript` or `ModuleScript` as a string.

```luau theme={null}
getscriptbytecode(script: LuaSourceContainer): string
```

Pass a script Instance and the function returns the bytecode the engine compiled from its source. Returns `nil` when the client can't reach the script.

Most commonly used to feed bytecode into a custom decompiler or disassembler. The built-in `decompile()` and `disassemble()` accept a script Instance directly and call `getscriptbytecode()` internally - reach for it yourself only when you need the raw bytes.

## Parameters

| Parameter | Type                                                                                               | Description                       |
| --------- | -------------------------------------------------------------------------------------------------- | --------------------------------- |
| `script`  | [`LuaSourceContainer`](https://create.roblox.com/docs/reference/engine/classes/LuaSourceContainer) | The script to read bytecode from. |

## Returns

`string` - the script's compiled bytecode in binary form.

## Example

<CodeGroup>
  ```luau Example 1 theme={null}
  local bytecode = getscriptbytecode(workspace.Part.LocalScript)
  ```

  ```luau Example 2 theme={null}
  -- Alternative usage
  task.spawn(function()
      local bytecode = getscriptbytecode(game.Players.LocalPlayer.Character.Animate)
      print(bytecode)
  end)
  ```
</CodeGroup>

<Tip>
  `LocalScript.Source` and `ModuleScript.Source` are stripped to empty strings on the client - `getscriptbytecode()` is the only path left to a script's raw bytes.
</Tip>