WebAssembly module inspector

What it does

Inspect imports, exports, section sizes and memory declarations, and export readable WAT without running the supplied module.

How to use it

1. Select a wasm binary, inspect the report and export WAT or JSON.
2. Processing stays in your browser. No upload or sign-up.

Example

Inspect an empty WebAssembly 1.0 module to see no imports or exports.

Methodology

A bounded binary section reader and bundled WABT parse and validate a module in a terminable worker. No supplied module is instantiated.

Limitations

2 MB input, 1,000 sections, 4 million WAT characters and 15 seconds. Unsupported WebAssembly proposals fail validation. WAT memory lines include declarations and references; this is not a security audit.

Automation

This tool runs in your browser. No upload API or MCP endpoint is available.