Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLIAbout this skill
Analyse and shrink JavaScript bundle size for any web app. Auto-detects bundler (Vite, Webpack, Rollup, esbuild, Next.js, Turbopack). Runs a production build with bundle analysis, identifies the largest chunks, duplicate dependencies, non-tree-shakeable imports, and missing code-splitting or lazy-load boundaries. Researches current best practices via Firecrawl and Context7. Maps every finding to a specific file and import with before/after size estimates. Generic across any framework. Use when asked to "reduce bundle size", "analyse bundle", "tree shaking", "lazy loading", "code splitting", "slow initial load", "large JS", "chunk size", "build performance", "LCP caused by JS", "why is the bundle so big", or "first load JS too large".
Quick start
- Copy the install prompt. Use the green button above this README.
- Send it to your agent. Paste it into your coding agent’s chat and send.
- Review the setup. Your agent checks the skill’s instructions, requirements, and installation scope.
Review, license & listing details
This is an imported listing. We haven’t certified its safety, license, or compatibility. Skills may include executable scripts.
Only SKILL.md was scanned. Supporting files and scripts were not checked. No safety grade has been assigned.
0 potential findings · Scanned 11/4/2026 · Scanner 0.2.1
Content SHA-256: 8ea885cba476c7fcfa187314cf5a767b52cc1ab08947f2d07be0654b36f24e22
About this listing
- Category
- Science & research
- Reported license
- MIT
- Listing language (estimated)
- English
- Review status
- Not individually reviewed
- Agent compatibility
- Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.