tldr/pages/common/wasm-opt.md

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2018-10-03 17:41:02 +01:00
# wasm-opt
> Optimize WebAssembly binary files.
- 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`