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WASM Inspector - Free Online WebAssembly Tool | IconVault

Upload a .wasm file to inspect its sections and read a WAT-style disassembly of the code. Free, private, runs in your browser.

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WASM Inspector

Inspect .wasm sections with WAT-style disassembly

5 of 5 free uses left

Drop a .wasm file

Parsed entirely in your browser

Upload a .wasm file to inspect it

You will see the magic, version, every section with its size, and a simple disassembly of the code section.

About this tool

IconVault's WASM Inspector opens up any WebAssembly (.wasm) binary right in your browser. Upload a file and it lists every section (type, import, function, memory, export, code and custom sections) with sizes and offsets, then shows a simple WAT-style disassembly of the code section so you can read the actual instructions.

The binary is parsed with a hand-written, in-browser parser: nothing is uploaded, nothing is executed, and the tool is free with no signup. It is a safe way to peek inside Rust, C++ or AssemblyScript builds.

Frequently asked questions

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