npm vs pnpm vs yarn: Which Package Manager Should You Use in 2026?

JavaScript has three major package managers and each one has a strong argument for being the right choice. npm ships with Node.js and works everywhere. pnpm uses hard links to save gigabytes of disk space and runs faster. yarn introduced workspaces to the ecosystem and has a loyal following. Choosing the wrong one isn't catastrophic — you can switch later — but the decision touches your CI pipeline, your team's workflow, and your monorepo setup. Getting it right early saves headaches. This comparison focuses on what actually matters day to day: install speed, disk usage, lockfile behavior, monorepo support, and real-world gotchas. TL;DR npm pnpm yarn (v1/berry) Ships with Node.js Yes No No Install speed Medium Fastest Fast Disk space High Lowest Medium Lockfile package-lock.json pnpm-lock.yaml yarn.lock Monorepo (workspaces) Good Excellent Excellent Phantom deps Yes No (strict) Yes Plug'n'Play No Optional Yes (Berry) Adoption Largest Growing fast Strong Short answer: Start with npm if