Bundlephobia Scraper 📦

Know the real cost of every npm dependency — before you ship it.

Bundlephobia Scraper resolves any npm package into its minified size, gzip size, dependency count and a dependency-size breakdown, straight from Bundlephobia. No API key, no login, no browser automation — just clean structured JSON you can drop into a CI pipeline, a spreadsheet, or a performance budget.

Feed it a list of package names (optionally pinned to a version like react@18.2.0) and get one tidy dataset row per package.

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💡 Why use this actor?

• No API key required — public data, zero auth friction.
• Minified + gzip sizes in both bytes and KB, ready to chart.
• Dependency count + top-10 dependency sizes to spot bloat.
• Version-aware — pin an exact version or take the latest.
• Fast & cheap — concurrent batches, ~$0.50 per 1,000 packages.
• CI-friendly output — flat, permissive JSON that maps to any tool.

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🚀 Use cases

• JavaScript bundle analysis — compare libraries before adding them.
• Dependency audits — flag heavyweight transitive dependencies.
• Performance budgets — enforce size limits in CI/CD.
• Developer tooling — power dashboards, linters and PR bots.

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🛠 Input

Field	Type	Description
mode	select	Scraping mode. Currently packages (resolve by name).
packages	array	npm package names. Optionally name@version. Prefilled with react, lodash, axios.
maxItems	integer	Max packages per run (default 100, max 1000).

Example input

{
  "mode": "packages",
  "packages": ["react", "lodash", "axios@1.7.2", "next"],
  "maxItems": 100
}

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📤 Output

One dataset item per package:

{
  "name": "react",
  "version": "19.2.8",
  "min_size_bytes": 7595,
  "min_size_kb": 7.42,
  "gzip_bytes": 2910,
  "gzip_kb": 2.84,
  "dependency_count": 0,
  "has_side_effects": true,
  "repository": "https://github.com/react/react.git",
  "description": "React is a JavaScript library for building user interfaces.",
  "top_dependencies": [{ "name": "react", "approximateSize": 7813 }],
  "url": "https://bundlephobia.com/package/react",
  "source": "bundlephobia",
  "scraped_at": "2026-07-25T00:00:00+00:00"
}

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🔗 Related actors

• npm Package Scraper
• npms Search Scraper
• pkg.go.dev Scraper
• GitHub Scraper

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⚖️ Notes

This actor uses Bundlephobia's public, unauthenticated size API. Cold packages are built on demand and may take a few seconds; the actor retries automatically. Only publicly available package metadata is collected.