# Static Site Optimizer > Use when the user wants to optimize, audit or clean up one or more static HTML/CSS/JS websites in a folder — above all to cut every external dependency (CDN fonts, CDN scripts and stylesheets, remote images) by self-hosting it, plus mechanical performance/SEO/accessibility hygiene (meta tags, image dimensions, lazy loading, robots.txt, sitemap.xml, favicon, README, llms.txt). Applies ONLY the fixed list of safe automatic fixes below; everything else is report-only. - Skill: `matteobaccan/static-site-optimizer` (Agent Skill, multi-file: 40 files) - Install (CLI): `npx skillmds@latest add matteobaccan/static-site-optimizer` - Raw SKILL.md: https://api.skillmd.com/api/skills/matteobaccan/static-site-optimizer/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Marketing & Growth - Author: matteobaccan (https://skillmd.com/u/matteobaccan) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/matteobaccan/static-site-optimizer --- # Static Site Optimizer ## Overview Takes a folder of plain static sites and, for each one, makes the site load **entirely from its own origin**: every stylesheet, script, font and image pulled from a CDN is downloaded into `assets/` and the reference rewritten to the local copy. On top of that it applies a fixed list of mechanical hygiene fixes, runs Lighthouse, and writes a per-site `AUDIT.md` plus an aggregated dashboard Artifact. The whole pass is driven by `scripts/optimize.js` (Node, no runtime dependencies). Only `--compress-images` and the Lighthouse step reach for external tooling via `npx`. Why this matters — GDPR exposure, one source of truth, one DNS resolution, supply-chain risk, visitors behind blockers — is set out in `reference/why-self-hosting.md`. Read it before arguing with a user who wants to keep a CDN reference, and cite it in `AUDIT.md` when a tracker or embed stays. **This skill is deliberately narrow.** Left to a generic "improve this site" instruction, a capable agent will rewrite contact forms, guess the site's real domain, edit business content, convert image formats and fix application bugs it happens to notice — all plausible, all outside what a hygiene pass should touch without a human's sign-off. This skill replaces that free-for-all with the fixed procedure and fix list below. ## When NOT to use - Sites with a build pipeline (React/Vue/bundlers) — this targets plain HTML/CSS/JS served as-is, with no build step to invert. - When the user wants design/UX changes, content changes, or bug fixes beyond the list below — those stay report-only by design. ## The ONLY automatic fixes in scope All applied by `node scripts/optimize.js --fix`: **Removing external references** (the point of the skill) - ``, `