Lua Runner
Execute Lua 5.3 code instantly in your browser. Powered by Fengari (pure JavaScript) — fully client-side, no server required.
Code (Lua 5.3)
Output
// Ready — write Lua and click Run
Frequently Asked Questions
Fengari is an implementation of Lua 5.3 written entirely in JavaScript (compiled from the C source using GopherJS). No plugins or server needed.
You can run standard Lua — loops, functions, tables, string operations, math, and more. It's great for learning Lua or running quick scripts.
File I/O (io.*), OS calls (os.execute, os.exit), and networking are not available. The standard print() function is supported.
No. All execution happens locally in your browser using Fengari's pure-JS Lua engine.