Analyse and shrink a web app's JavaScript bundle. Use when "reduce bundle size", "code splitting", "slow initial load", or "why is the bundle so big". Runtime → audit-performance.
Install
npx skills add kensaurus/skills --skill audit-bundle-sizenpx skills add kensaurus/skills --skill audit-bundle-size -a claude-code -gnpx skills add kensaurus/skills --skill audit-bundle-size -a codex -ggemini skills install https://github.com/kensaurus/skills.git --path skills/audit-bundle-sizegh skill install kensaurus/skills audit-bundle-sizegit clone --depth 1 https://github.com/kensaurus/skills /tmp/kensaurus__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/kensaurus__skills/skills/audit-bundle-size ~/.claude/skills/audit-bundle-size # Claude Code
cp -R /tmp/kensaurus__skills/skills/audit-bundle-size ~/.agents/skills/audit-bundle-size # Codex, Cursor, Gemini CLI, Copilot, OpenCode