How pnpm Saves Disk Space and Boosts Install Speed for JavaScript Projects

When using front‑end tools, yarn and npm are common package managers, but having many projects with the same dependencies creates duplicate copies on disk, which can consume a lot of space.

pnpm is a package manager that quickly saves disk space by sharing identical dependencies across projects.

pnpm works by comparing files and only storing changed files, so common parts of multiple projects share a single version of the dependency.

This greatly reduces disk usage and speeds up installation.

Key features of pnpm include:

Fast, efficient, monorepo support, strict

Fast – pnpm can be more than twice as fast as npm or yarn.

Efficient – the node_modules folder contains links to a single content‑addressable store.

Monorepo support – pnpm has built‑in support for multiple packages in a single repository.

Strict – pnpm creates a non‑flattened node_modules, preventing code from accessing arbitrary packages.

Installation methods:

Standalone script (for POSIX systems without Node.js):

curl -fsSL https://get.pnpm.io/install.sh | sh -

If curl is unavailable, use wget: wget -qO- https://get.pnpm.io/install.sh | sh - PowerShell on Windows: iwr https://get.pnpm.io/install.ps1 -useb | iex Install Node.js with pnpm env after the above.

Homebrew (macOS/Linux): brew install pnpm Scoop (Windows): scoop install nodejs-lts pnpm Corepack (Node.js v16.13+): corepack enable Check for the latest version with: corepack prepare [email protected] --activate npm: npm install -g pnpm npx: npx pnpm add -g pnpm Give pnpm a try and see the benefits for yourself.