dep-size

Real disk footprint of your npm dependencies — sorted largest first, direct deps highlighted.

npm outdated tells you what's old. npm audit tells you what's vulnerable. dep-size tells you what's eating your disk.

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Why?

bundlephobia measures browser bundle size (after tree-shaking) — not disk size.
npm ls shows the dependency tree — not sizes.
du -sh node_modules/* is slow, Unix-only, and unsorted.

dep-size scans node_modules directly, sizes every package, and gives you a sorted, colorized breakdown in seconds. Works on Windows, Mac, and Linux. Zero dependencies.

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Install

npm install -g dep-size

Or without installing:

npx dep-size

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Usage

# Top 20 packages by disk size (default)
dep-size

# Top 50
dep-size --top 50

# Only packages larger than 5 MB
dep-size --min 5

# Only direct dependencies from package.json
dep-size --direct

# Analyze a subdirectory
dep-size ./backend

# Export to JSON
dep-size --json > sizes.json

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Example Output

dep-size  my-app  /path/to/my-app/node_modules

238 packages · 312.4 MB · 48,291 files

  Package                                    Size    Files  % of total
  ─────────────────────────────────────────────────────────────────────────
● typescript                              42.31 MB    1247      13.5%  ████████████████░░
● @prisma/client                          31.18 MB     892      10.0%  ██████████████░░░░
  @esbuild/win32-x64                      28.44 MB       3       9.1%  █████████████░░░░░
● webpack                                 18.04 MB     645       5.8%  ████████░░░░░░░░░░
  acorn                                   12.30 MB     148       3.9%  ██████░░░░░░░░░░░░
● lodash                                  13.20 MB     605       4.2%  ██████░░░░░░░░░░░░
● react                                    2.18 MB      34       0.7%  █░░░░░░░░░░░░░░░░░
  … and 231 more packages

  ─────────────────────────────────────────────────────────────────────────
  TOTAL                                   312.4 MB   48,291

  ● = direct dependency in package.json
  Use --top N, --min <mb>, or --direct to filter.

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Color Legend

Color	Meaning
Red bar	> 15% of total
Yellow bar	> 5% of total
Gray bar	< 5% of total
Green dot (●)	Direct dependency

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JSON Output

dep-size --json

{
  "directory": "/path/to/project",
  "totalPackages": 238,
  "totalSize": 327573504,
  "totalFiles": 48291,
  "packages": [
    {
      "name": "typescript",
      "size": 44368076,
      "files": 1247,
      "direct": true
    }
  ]
}

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License

MIT

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Keywords

node_modules size · package size · dependency size · disk usage · heaviest packages · npm package size · bundle weight · analyze node_modules · zero dependencies · cli

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Built to solve, shared to help — Rushabh Shah 🛠️✨

_{One of 40+ zero-dependency developer CLI tools — no node_modules, ever.}