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docs/doc/wat2wasm.1.html

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| WABT(1) | General Commands Manual | WABT(1) |

NAME

wat2wasm — translate from WebAssembly text format to the WebAssembly binary format

SYNOPSIS

| wat2wasm | [options] file |

DESCRIPTION

wat2wasm Read a file in the wasm text format, check it for errors, and convert it to the wasm binary format.

The options are as follows:

--helpPrint this help message--versionPrint version information-v, --verboseUse multiple times for more info--debug-parserTurn on debugging the parser of wat files-d, --dump-modulePrint a hexdump of the module to stdout--enable-exceptionsEnable Experimental exception handling--disable-mutable-globalsDisable Import/export mutable globals--disable-saturating-float-to-intDisable Saturating float-to-int operators--disable-sign-extensionDisable Sign-extension operators--disable-simdDisable SIMD support--enable-threadsEnable Threading support--enable-function-referencesEnable Typed function references--disable-multi-valueDisable Multi-value--enable-tail-callEnable Tail-call support--disable-bulk-memoryDisable Bulk-memory operations--disable-reference-typesDisable Reference types (externref)--enable-annotationsEnable Custom annotation syntax--enable-code-metadataEnable Code metadata--enable-gcEnable Garbage collection--enable-memory64Enable 64-bit memory--enable-multi-memoryEnable Multi-memory--enable-extended-constEnable Extended constant expressions--enable-allEnable all features-o, --output=FILEOutput wasm binary file. Use "-" to write to stdout.-r, --relocatableCreate a relocatable wasm binary (suitable for linking with e.g. lld)--no-canonicalize-leb128sWrite all LEB128 sizes as 5-bytes instead of their minimal size--debug-namesWrite debug names to the generated binary file--no-checkDon't check for invalid modules

EXAMPLES

Parse test.wat and write to .wasm binary file with the same name

$ wat2wasm test.wat

Parse test.wat and write to binary file test.wasm

$ wat2wasm test.wat -o test.wasm

Parse spec-test.wast, and write verbose output to stdout (including the meaning of every byte)

$ wat2wasm spec-test.wast -v

SEE ALSO

wasm-decompile(1), wasm-interp(1), wasm-objdump(1), wasm-stats(1), wasm-strip(1), wasm-validate(1), wasm2c(1), wasm2wat(1), wast2json(1), wat-desugar(1), spectest-interp(1)

BUGS

If you find a bug, please report it at
https://github.com/WebAssembly/wabt/issues.

| September 23, 2025 | Debian |