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Convert LUA to LUAC

Verified by Adam B.· reviewed by FE Editorial ·updated Aug 1, 2026
QUICK ANSWER
Is it possible to convert LUA to LUAC?
Yes - LUA converts to LUAC.

Run luac -o script.luac script.lua in a terminal. The luac compiler is bundled with Lua, so no additional software is needed. Bytecode loads slightly faster at runtime because the parse step is skipped, and it hides the readable source text from casual inspection.

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Tested on macOS, Windows & Linux
Last verified Oct 2026

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Why convert LUA to LUAC?

Distributing scripts as bytecode removes the parse overhead on each load and prevents casual reading of the source code. The .luac format is Lua's native compiled bytecode representation, produced directly by the standard Lua toolchain that ships with every Lua installation.

How to convert LUA to LUAC

luac FREE

Run luac -o script.luac script.lua in a terminal. Add -s to strip debug info for a smaller file, or list multiple .lua files to compile them into a single bytecode chunk.

LuaJIT FREE

Run luajit -b script.lua script.luac to compile to LuaJIT's own bytecode format. Note that LuaJIT bytecode is incompatible with the standard Lua VM.

About these formats

.LUA Lua Script (source code)

A LUA file is source code written in Lua, a lightweight scripting language created in 1993. Any code editor (VS Code, Notepad++) opens it for reading or editing. To run it you need the Lua…

Open .LUA details →
.LUAC Lua Compiled Source Code

A .LUAC file is associated with Lua Compiled Source Code, a developer file.

Open .LUAC details →

Quality & what to watch

  • A .luac file is tied to the exact Lua version that compiled it; bytecode from luac 5.4 will be rejected by Lua 5.3 or earlier.
  • Bytecode is not encrypted - tools such as unluac can partially decompile .luac files. Do not rely on it to protect sensitive logic.
  • The bytecode format is platform-specific; a .luac compiled on a 64-bit machine may fail on a 32-bit device. Compile on the same platform that will run it.

Frequently asked questions

Is luac already installed if I have Lua?
Yes. luac ships with the official Lua distribution and requires no separate download.
Will the .luac file run faster than the original .lua?
Slightly, because the parser step is skipped at load time. For most scripts the difference is small.
Can I recover the original .lua source from a .luac file?
Not reliably. Decompilers exist but produce approximate output; passing -s to luac strips even line numbers and function names, making recovery harder.
Does LuaJIT use the same bytecode format as standard Lua?
No. LuaJIT bytecode is incompatible with the standard Lua VM; use luajit -b only when the target also runs LuaJIT.