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On this page you find all important commands for the CLI tool wasm-opt. If the
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wasm-opt
- wasm-opt is a command line tool used for optimizing WebAssembly modules.
- It is part of the WebAssembly Binary Toolkit (wabt), which is a suite of tools for working with WebAssembly.
- The main purpose of wasm-opt is to reduce the size of WebAssembly modules while maintaining their functionality.
- It achieves this by applying various optimization techniques that eliminate redundancy and improve the overall efficiency.
- wasm-opt can perform a wide range of optimizations including function inlining, dead code elimination, constant folding, and more.
- It can also remove debugging information and other unnecessary metadata from the WebAssembly module, further reducing its size.
- The tool supports both binary and textual formats of WebAssembly, allowing optimization of modules in either format.
- wasm-opt provides several command line options to specify the desired optimizations and control the level of optimization.
- The optimized WebAssembly module produced by wasm-opt can be directly executed by a WebAssembly runtime environment, resulting in faster loading times and improved performance.
- Developers typically integrate wasm-opt into their build pipelines to automatically optimize WebAssembly modules before deployment, ensuring efficient and optimized execution.
List of commands for wasm-opt:
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wasm-opt:tldr:12c59 wasm-opt: Apply all optimizations and write to a given file (takes more time, but generates optimal code).$ wasm-opt -O4 ${input-wasm} -o ${output-wasm}try on your machineexplain this command
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wasm-opt:tldr:4e3e7 wasm-opt: Apply default optimizations and write to a given file.$ wasm-opt -O ${input-wasm} -o ${output-wasm}try on your machineexplain this command
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wasm-opt:tldr:529d0 wasm-opt: Print the textual representation of the binary to console.$ wasm-opt ${input-wasm} --printtry on your machineexplain this command
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wasm-opt:tldr:a920b wasm-opt: Optimize a file for size.$ wasm-opt -Oz ${input-wasm} -o ${output-wasm}try on your machineexplain this command