NPM vs Yarn vs PNPM: Which Package Manager Should You Use in 2026?

The Package Manager Landscape

Every JavaScript project needs a package manager. The three main options are:

• npm — The default, ships with Node.js
• Yarn — Created by Facebook in 2016 to fix npm's shortcomings
• pnpm — The newcomer focused on speed and disk efficiency

Quick Comparison

Feature	npm	Yarn	pnpm
Speed	Good (v9+)	Fast	Fastest
Disk usage	High (duplicates)	High (duplicates)	Low (content-addressable)
Lock file	package-lock.json	yarn.lock	pnpm-lock.yaml
Workspaces	Yes (v7+)	Yes (native)	Yes (native)
Plug'n'Play	No	Yes (Yarn Berry)	No
Security	npm audit	yarn audit	pnpm audit
Offline mode	Limited	Yes	Yes
Strictness	Loose	Loose	Strict (no phantom deps)

npm: The Default

npm comes pre-installed with Node.js. No setup needed.

# Install all dependencies
npm install

# Add a package
npm install express

# Add a dev dependency
npm install -D typescript

# Remove a package
npm uninstall express

# Run a script
npm run build
npm test
npm start

# Update packages
npm update
npm outdated

# Security audit
npm audit
npm audit fix

npm Pros

• Zero setup — comes with Node.js
• Largest ecosystem (2M+ packages)
• npx for running packages without installing
• Improved significantly in v7-v9

npm Cons

• Historically slower than alternatives
• Flat node_modules can cause phantom dependency issues
• Larger disk usage (duplicates packages across projects)

Yarn: The Facebook Alternative

# Install Yarn
npm install -g yarn

# Install dependencies
yarn install
yarn  # shorthand

# Add packages
yarn add express
yarn add -D typescript

# Remove
yarn remove express

# Run scripts
yarn build
yarn test

# Upgrade
yarn upgrade
yarn upgrade-interactive

Yarn Classic (v1) vs Yarn Berry (v2+)

Yarn Berry introduced Plug'n'Play (PnP) — a radical approach that eliminates node_modules entirely:

# Enable Yarn Berry
yarn set version berry

# With PnP, dependencies are stored in .yarn/cache as zip files
# No node_modules folder at all

Yarn Pros

• Faster than npm (parallel downloads)
• Deterministic installs (yarn.lock)
• Workspaces for monorepos
• Plug'n'Play eliminates node_modules

Yarn Cons

• Yarn Berry has compatibility issues with some packages
• PnP requires IDE configuration
• Two very different versions (Classic vs Berry)

pnpm: The Efficient Choice

pnpm uses a content-addressable store — each package version is stored once on disk, and projects use hard links.

# Install pnpm
npm install -g pnpm

# Install dependencies
pnpm install

# Add packages
pnpm add express
pnpm add -D typescript

# Remove
pnpm remove express

# Run scripts
pnpm run build
pnpm test

# Update
pnpm update
pnpm outdated

pnpm Pros

• Fastest installation speed
• Smallest disk usage (content-addressable store)
• Strictest — prevents phantom dependencies
• Excellent monorepo support
• Compatible with npm ecosystem

pnpm Cons

• Not pre-installed (requires separate install)
• Strict mode can break packages that rely on phantom deps
• Smaller community than npm/Yarn

Performance Benchmarks

For a typical project with ~500 dependencies:

Operation	npm	Yarn	pnpm
Clean install	45s	35s	25s
With cache	15s	10s	8s
With lockfile	12s	8s	6s
Disk usage	250MB	250MB	150MB

Which Should You Choose?

• Starting a new project? → Use pnpm for speed and efficiency
• Working on an existing project? → Use whatever it already uses
• Need maximum compatibility? → Use npm
• Building a monorepo? → Use pnpm or Yarn Berry
• Enterprise/team project? → Use pnpm (strictness prevents bugs)

Related Tools

• JSON Formatter — Format package.json files
• .gitignore Generator — Generate .gitignore for Node.js
• Dockerfile Generator — Docker setup for Node.js
• JSON to TypeScript — Generate types from JSON