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paralin/minimize-go-wasm-size.md

Last active June 6, 2024 20:53
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Minimizing Go wasm binaries size: a multi-pronged approach
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minimize-go-wasm-size.md

My approach to smaller Go wasm binaries:

  • protoc-gen-go-lite: Removes dependency on reflection, making your binaries lighter.
  • goweight: Analyze the size of your binaries. This is a fork with added wasm support.
  • goda: Use to find why something is imported by executing: 
    goda graph "reach(.:all, gonum.org/v1/gonum/mat)" | dot -Tsvg -o graph.svg
  • wasm-opt: Optimize wasm binaries for size with the command: 
    wasm-opt --enable-bulk-memory -Oz -o out.wasm in.wasm
  • brotli: Compress binaries to massively reduce size; for example, from 50MB to 3MB.
  • tinygo: Not fully compatible with all packages yet but shows promise for further size reduction.

Finally, here is a project template which incorporates all of the above.

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