STAGE // 14-TIER CAPO.JS PRIORITY CLASSIFICATION & STABLE REORDERING DIFF
KENDALL-TAU RANK: 100.0% AFTER REORDER
astro-compress-rs is a post-build optimization CLI for Astro and static sites that maximizes Core Web Vitals and Lighthouse performance scores. It reorders HTML <head> tags using Capo.js weight rules and minifies HTML, CSS, JS, and SVG assets in parallel across all CPU cores.
$ cargo install astro-compress-rs
| Subsystem / Operation | JS astro-compress (terser/csso/svgo) | astro-compress-rs (Rust) | Speedup | Peak Memory |
|---|---|---|---|---|
| Capo.js 14-Tier <head> Audit & Reorder (1k pages) | 1,480.0 ms | 21.4 ms | 69.2x | 8 MB (vs 340 MB) |
| lightningcss AST Minify & Critical Inline (1k pages) | 4,920.0 ms | 76.5 ms | 64.3x | 16 MB (vs 620 MB) |
| Verbatim-Safe HTML Minification (1k pages) | 3,640.0 ms | 58.2 ms | 62.5x | 14 MB (vs 510 MB) |
| Parallel SVG Metadata & Comment Stripping (120 SVGs) | 890.0 ms | 12.8 ms | 69.5x | 6 MB (vs 240 MB) |
| Full 1,000-Page dist/ Post-Build Compression | 10,930.0 ms | 168.9 ms | 64.7x | 16 MB (vs 620 MB) |