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wasm-opt

Optimize WebAssembly binary files. More information: https://github.com/webassembly/binaryen.

  • Apply default optimizations and write to a given file:

wasm-opt -O {{input.wasm}} -o {{output.wasm}}

  • Apply all optimizations and write to a given file (takes more time, but generates optimal code):

wasm-opt -O4 {{input.wasm}} -o {{output.wasm}}

  • Optimize a file for size:

wasm-opt -Oz {{input.wasm}} -o {{output.wasm}}

  • Print the textual representation of the binary to console:

wasm-opt {{input.wasm}} --print