pnpm vs npm vs Yarn
Compare pnpm, npm, and Yarn package managers - speed, disk usage, workspaces, security, and monorepo support for Node.js projects.
Overview
pnpm, npm, and Yarn are the three main package managers for Node.js. npm is the default that ships with Node.js, Yarn was created by Facebook to address npm’s early shortcomings, and pnpm uses a content-addressable storage approach that saves disk space and improves speed. Each has evolved significantly and offers a strong feature set.
Feature Comparison
| Feature | pnpm | npm | Yarn (v4/Berry) |
|---|---|---|---|
| Disk Usage | Content-addressable store (shared) | Duplicated per project | PnP (zero-installs) or node_modules |
| Install Speed | Fastest | Moderate | Fast |
| Lockfile | pnpm-lock.yaml | package-lock.json | yarn.lock |
| Workspaces | Built-in | Built-in (v7+) | Built-in |
| Strictness | Strict (no phantom deps) | Flat node_modules | PnP or strict |
| Plug’n’Play | No | No | Yes (default in v4) |
| Patching | pnpm patch | npm overrides | yarn patch |
| Peer Deps | Strict by default | Auto-installed | Strict |
| Side Effects Cache | Yes | No | Yes |
| Monorepo Support | Excellent (filtering, recursive) | Basic workspaces | Good (plugins) |
| Publishing | pnpm publish | npm publish | yarn npm publish |
| Offline Mode | Via store | Via cache | Zero-installs |
| Overrides | pnpm.overrides | overrides | resolutions |
| Scripts | pnpm run / pnpm exec | npm run / npx | yarn run / yarn dlx |
| Corepack | Supported | N/A (default) | Supported |
| node_modules Layout | Symlinked (non-flat) | Flat (hoisted) | PnP or node_modules |
pnpm Pros & Cons
Pros:
- Saves significant disk space via content-addressable storage
- Fastest installation speed
- Strict dependency resolution prevents phantom dependencies
- Excellent monorepo support with filtering
- Compatible with existing npm ecosystem
- Symlinked node_modules works with all tools
- Built-in patching support
Cons:
- Strict mode can break packages assuming hoisted layout
- Smaller community than npm
- Some tools may not support symlinked node_modules
- Extra setup step (not bundled with Node.js)
- Less familiar to developers coming from npm
npm Pros & Cons
Pros:
- Ships with Node.js (no installation needed)
- Largest community and ecosystem
- Simple and familiar
- npx for one-off package execution
- Continuously improving performance
- Workspaces support for monorepos
- Universal compatibility
Cons:
- Slower installations than pnpm and Yarn
- Duplicates packages across projects
- Flat node_modules allows phantom dependencies
- Larger disk footprint
- Historically had security concerns (improved)
Yarn (v4/Berry) Pros & Cons
Pros:
- Plug’n’Play eliminates node_modules entirely
- Zero-installs for instant CI/CD
- Excellent monorepo plugin ecosystem
- Strong TypeScript support
- Constraints for policy enforcement
- Offline mode via zero-installs
Cons:
- PnP compatibility issues with some packages
- Breaking changes between v1 and v4
- Steeper learning curve (v4)
- Smaller adoption than npm
- Configuration can be complex
- Some community fragmentation (v1 vs v4)
When to Use pnpm
- Monorepos with many packages (filtering + recursive commands)
- Projects where disk space is a concern
- Teams wanting strict dependency management
- CI/CD pipelines where install speed matters
- Multiple projects on the same machine
- Projects that need to prevent phantom dependencies
- Organizations standardizing on a fast, efficient package manager
When to Use npm or Yarn
Use npm when:
- Starting out and want zero setup
- Working on simple, single-package projects
- Compatibility with all tools is essential
- Team prefers the standard, default option
Use Yarn when:
- You want Plug’n’Play / zero-installs
- Your monorepo needs advanced constraint policies
- Offline development is a priority
- Your team is already invested in Yarn ecosystem
Verdict
Choose pnpm for the best balance of speed, disk efficiency, and correctness. It works with the existing npm ecosystem while providing strict dependency management and excellent monorepo support.
Choose npm for simplicity and maximum compatibility, especially for small projects or teams new to Node.js.
Choose Yarn v4 if you want Plug’n’Play zero-installs or need its advanced monorepo constraint features.
For most teams and projects, pnpm offers the strongest overall package management experience in 2025.