wasm2wat

Convert to WAT

$ wasm2wat [input.wasm]

$ wasm2wat [input.wasm] -o [output.wat]

$ wasm2wat --fold-exprs [input.wasm]

$ wasm2wat --generate-names [input.wasm]

wasm2wat [-o output] [--fold-exprs] [options] input

wasm2wat is a disassembler from the WABT (WebAssembly Binary Toolkit) that converts WebAssembly binary (.wasm) files into the human-readable WebAssembly Text Format (WAT). The WAT output uses S-expression syntax that represents the module structure, functions, types, imports, and exports in a readable form.
The tool is essential for debugging and inspecting compiled WebAssembly modules, allowing developers to examine the actual instructions generated by compilers. Options like --fold-exprs produce more compact output by nesting expressions, and --generate-names assigns readable names to unnamed functions and variables.
Output can be written to a file or printed to stdout for piping to other tools. The reverse operation (text to binary) is performed by the companion tool wat2wasm.

-o FILE

Output file.

Fold expressions.

Generate names.

Inline exports.

Show help.

One-way mostly. Part of WABT. Large output for big modules.

wasm2wat is part of WABT (WebAssembly Binary Toolkit), converting binary WASM to readable WAT text format.

wat2wasm(1), wasm2c(1), wasm-objdump(1)