WebAssembly Playground
Write and run WebAssembly code directly in your browser. Compile WAT (WebAssembly Text Format) to WASM and execute it instantly. No server required - everything runs locally.
What is WebAssembly?
WebAssembly (WASM) is a binary instruction format for a stack-based virtual machine. It's designed as a portable compilation target for programming languages, enabling deployment on the web for client and server applications.
What is WAT?
WAT (WebAssembly Text Format) is the human-readable text representation of WebAssembly. It's a low-level assembly-like language that can be compiled to the binary WASM format. This playground lets you write WAT code and see it execute in real-time.
How does it work?
This playground uses WABT (WebAssembly Binary Toolkit) compiled to WebAssembly to compile your WAT code to binary WASM format. The compiled module is then instantiated and executed directly in your browser using the WebAssembly JavaScript API. Everything runs locally - no data is sent to any server.
Privacy & Security
All compilation and execution happens locally in your browser. Your code never leaves your device or touches any servers. This makes it safe for experimenting with WebAssembly without any privacy concerns.