spglsl

spglsl (v0.3.1) is a WebGL GLSL minifier and compiler based on Google ANGLE. It preprocesses directives, removes whitespace, applies constant folding, and mangles non-exported functions and variable names. Optimized for js13k game jams and similar size-constrained WebGL projects, it is distributed as a precompiled WASM binary via npm, runs on Node.js (>=14.17.4), and includes Rollup/Vite plugins. Unlike other GLSL minifiers (e.g., glsl-minify), spglsl provides full ANGLE-based compilation validation and controllable mangling via globals map. Release cadence is low; last major update 2022.