npm-install-size

Note: npm-install-size can show both the published npm package size (the files you would get from the registry, before install) and the actual disk usage after installation in node_modules (with --installed).

Features

📦

Analyze install size of any npm package

🗂️

Supports local paths & monorepo workspaces

🌳

Dependency tree, minified/gzipped, file type breakdown

⚡

Compare, history, badge, and interactive modes

📝

JSON, CSV, Markdown, and human-readable output

🔌

Programmatic API for Node.js

⚙️

Config file support

🚀

No install required: npx npm-install-size <package>

💾

Show actual installed size of node_modules or a specific package (--installed)

Quick Usage

$ npx npm-install-size react express lodash
📦 react@19.1.0: 167 kB
📦 express@5.1.0: 197 kB
📦 lodash@4.17.21: 1.41 MB

$ npx npm-install-size --installed
⚠️  This is the actual installed size on disk, including all dependencies. It may be much larger than the published tarball size.
📦 node_modules: 132 MB

$ npx npm-install-size --installed express
⚠️  This is the actual installed size on disk, including all dependencies. It may be much larger than the published tarball size.
📦 node_modules/express: 1.2 MB

See full usage & docs on GitHub.

GitHub Repo View on npm

FAQ

Q: Does this show the size after install?
A: By default, it shows the size of the published package tarball, not the full node_modules disk usage. But you can use --installed to see the actual installed size of node_modules or a specific package.

Q: Can I see the size after install?
A: Yes! Use --installed to see the actual disk usage of node_modules or a specific package.