Elfconv – Linux Apps to High-Performance WASM Binary Translator
This post introduces elfconv, a binary translator that converts Linux applications into WebAssembly. repo: https://github.com/yomaytk/elfconv Recently, performance has improved dramatically. In our LINPACK benchmark, the Wasm generated from ELF/AArch64 by elfconv now runs at roughly 60–80% of the performance of the Wasm directly compiled from source code. This shows that elfconv can produce WebAssembly with practical, real‑world performance! Furthermore, compared to QEMU running in the browser, it achieves approximately 68× the performance. Benchmark test:…
In plain words
Elfconv is a binary translator that converts Linux applications into WebAssembly without requiring source code recompilation. It translates ELF/AArch64 binaries directly to WASM, achieving 60–80% of the performance of natively compiled WebAssembly while delivering approximately 68 times faster execution than browser-based QEMU emulation. The tool is designed for developers who need to run Linux applications in web environments with practical performance levels.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
This post introduces elfconv, a binary translator that converts Linux applications into WebAssembly. repo: https://github.com/yomaytk/elfconv Recently, performance has improved dramatically. In our LINPACK benchmark, the Wasm generated from ELF/AArch64 by elfconv now runs at roughly 60–80% of the performance of the Wasm directly compiled from source code. This shows that elfconv can produce WebAssembly with practical, real‑world performance! Furthermore, compared to QEMU running in the browser, it achieves approximately 68× the performance. Benchmark test: https://github.com/yomaytk/elfconv/issues/116 QEMU in the browser: https://github.com/ktock/qemu-wasm Please give it a try, and feel free to submit any issues or pull requests!
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