# PkgPulse

> PkgPulse is a free, open data platform for comparing npm packages. It provides health scores, bundle sizes, download trends, security vulnerability checks, and side-by-side comparisons for JavaScript/TypeScript packages.

PkgPulse helps developers make informed decisions when choosing between npm packages by aggregating data from the npm registry, Bundlephobia, and other sources into a unified analysis.

## Main Pages

- [Homepage](https://www.pkgpulse.com): Search and compare npm packages with interactive health score dashboard
- [Guides](https://www.pkgpulse.com/guides): Data-driven articles about npm package comparisons and JavaScript ecosystem trends

## Comparison Pages

- [React vs Vue](https://www.pkgpulse.com/compare/react-vs-vue): Side-by-side comparison with health scores, bundle sizes, and download trends
- [Express vs Fastify](https://www.pkgpulse.com/compare/express-vs-fastify): Node.js framework comparison
- [Vite vs Webpack](https://www.pkgpulse.com/compare/vite-vs-webpack): Build tool comparison
- [Jest vs Vitest](https://www.pkgpulse.com/compare/jest-vs-vitest): Testing framework comparison
- [Tailwind CSS vs Sass](https://www.pkgpulse.com/compare/sass-vs-tailwindcss): Styling approach comparison

Over 70 comparison pages are available. See [sitemap.xml](https://www.pkgpulse.com/sitemap.xml) for the full list.

## Guides Articles

- [React vs Vue in 2026](https://www.pkgpulse.com/guides/react-vs-vue-2026): Data-driven comparison using real npm data
- [Express vs Fastify in 2026](https://www.pkgpulse.com/guides/express-vs-fastify-2026): Node.js framework performance and ecosystem analysis
- [How to Reduce JavaScript Bundle Size](https://www.pkgpulse.com/guides/reduce-javascript-bundle-size): Practical guide to optimizing bundle size

## Data Provided

Each package analysis includes:
- **Health Score** (0-100): Composite score based on maintenance, popularity, quality, security, and stability
- **Bundle Size**: Minified and gzipped sizes with dependency count
- **Weekly Downloads**: Current download volume with historical trend data
- **Security Vulnerabilities**: Known CVEs and advisories
- **Version Info**: Latest version, license, and last update date

## Optional

- [Sitemap](https://www.pkgpulse.com/sitemap.xml): Full list of all indexed pages
- [Robots.txt](https://www.pkgpulse.com/robots.txt): Crawler access rules