Lua Beautifier

Format and beautify Lua code online with proper indentation and spacing. Paste Lua and get clean, readable output for better script maintainability.

Input

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Output

Output will appear here...

What is Lua Beautifier

Last reviewed: April 18, 2026

Lua is a small, fast scripting language often embedded in games, network devices, and other applications that need lightweight scripting.

Lua Beautifier is an online tool that helps you format and beautify Lua.

It reformats lua so the pasted content is easy to scan, diff, and share, no manual whitespace cleanup required.

Why use it

Make lua easier to read, review, and debug.
Standardize lua spacing and structure before sharing or committing output.
Clean up pasted lua payloads from logs, APIs, or config files faster.
Avoid manual lua formatting work when you need copy-ready output.

Example (before/after)

Before formatting

local function greet(name)return "Hello, "..name end

After formatting

local function greet(name)
  return "Hello, " .. name
end

Common errors

Invalid syntax

The tool cannot process input that already contains broken syntax or malformed structure.

Fix: Check the pasted content first and correct the syntax error closest to the reported failure point.

Incomplete pasted input

Partial snippets often fail when opening and closing characters are missing.

Fix: Paste the full block or file so the tool can evaluate the complete structure.

Wrong content type

Formatting or validating the wrong format produces misleading errors.

Fix: Make sure the content matches the tool you are using before processing it.

FAQ

Is Lua Beautifier free to use?

Yes. Lua Beautifier is a free browser-based tool — no sign-up, no watermark, no rate limits for typical developer workflows.

Does Lua Beautifier send my data to a server?

Almost all of the processing runs client-side in your browser, so pasted input stays on your device unless the tool explicitly calls an external API.

What input can I paste into Lua Beautifier?

Paste the data type the tool is built for — plain text, code, or a structured payload — into the input panel. The tool processes it as you type.

Can I use Lua Beautifier on mobile?

Yes. Lua Beautifier is responsive and works on phones, tablets, and desktops. Copy-to-clipboard and download actions are wired for touch devices too.

How do I export the result from Lua Beautifier?

Use the copy-to-clipboard button or the download action on the output panel to move the result straight into your editor, ticket, or build pipeline.

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