Bundlephobia Package Size Scraper

Bundlephobia Package Size Scraper

Get minified and gzip bundle sizes for npm packages instantly. results are neatly formatted in your Apify dataset for easy export as JSON, CSV, or Excel.

Provide a simple package name like react, or pin a specific release version using lodash@4.17.21. The scraper processes your list sequentially, handles missing items gracefully without stopping the run, and records helpful error details if a package cannot be found.

Use cases

• Frontend budget: Compare gzip bytes for the libraries you plan to add to your project
• Dependency review: Record minified size, gzip size, and dependency counts across a sample of packages
• Version pin checks: Target specific releases when the latest tag isn't what you ship in production
• Recurring watch: Schedule regular runs for your package lists to monitor size changes over time
• Spreadsheet export: Download CSV or Excel files for your platform or design reviews
• Missing package handling: Keep runs moving even if a package name returns a 404, logging status details cleanly

What data does this actor extract?

Field	Type	Description
name	string	Package name
version	string	Resolved package version
packageDescription	string	Short description from the package info
size	integer	Minified size in bytes
gzip	integer	Gzipped size in bytes
dependencyCount	integer	Total dependency count
hasJSModule	boolean	Whether an ESM entry is reported
hasSideEffects	boolean	Whether side effects are declared
repository	string	Repository URL if available
scraped_at	string	UTC timestamp
error	string	Failure note on error rows
url	string	Request URL on error rows
status	integer	HTTP status on error rows
message	string	Failure message for error views

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Input configuration

Parameter	Type	Default	Description
mode	string	sizes	Size checking mode
packages	array	["react", "lodash@4.17.21"]	List of npm names and optional @version tags
requestDelaySecs	number	1	Wait time between requests
userAgent	string	BigiByteActorResearch/1.0	Custom client identifier
timeoutSecs	integer	300	Overall run time limit in seconds
requestTimeoutSecs	integer	30	Individual request timeout limit
proxyConfiguration	object	{"useApifyProxy": false}	Optional proxy settings

Example input

{
  "mode": "sizes",
  "packages": ["react", "lodash@4.17.21"],
  "requestDelaySecs": 1,
  "timeoutSecs": 300,
  "requestTimeoutSecs": 30,
  "proxyConfiguration": { "useApifyProxy": false }
}

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Trademark Notice

All product names, logos, and brands belong to their respective owners. Use of these names does not imply endorsement or official partnership.

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FAQ

Can I export CSV? Yes. Open the dataset and export JSON, CSV, or Excel.

What happens if a package name is wrong? You get one error row with status 404 and the request URL. The rest of the list still runs.

Why is the description field called packageDescription? Apify reserves the name description in dataset schemas. The text is the same field the size payload calls description.

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Is web scraping legal?

This Actor only collects publicly available data without bypassing any access controls or restrictions. Scraping public data is generally standard practice, but how you use the data matters:

• Personal data: If results include personal details, applicable privacy regulations like GDPR or CCPA may govern how you store and process that information. Only collect personal data when you have a valid, legitimate purpose.
• Copyright: Content such as descriptions or text snippets may be protected by copyright. Avoid republishing full copyrighted materials without permission.
• Terms of use: Always respect platform guidelines, stated rate limits, and attribution requirements.
• Legal advice: This overview is for general informational purposes and does not constitute legal counsel. Consult a professional if you have specific legal questions.

To learn more, read Apify's guide: Is web scraping legal?