What is Bundlephobia?
Bundlephobia shows how much an npm package will add to your JavaScript bundle. Search for a package and it reports the minified and gzipped size, estimated download time, and whether it supports tree-shaking.
It also shows the size history across versions and suggests similar, smaller packages, which helps you keep web apps fast.
Key features
- Minified and gzipped size
- Download time estimates
- Tree-shaking and side-effect info
- Size history and lighter alternatives
Pros
- Quick size check before installing
- Helpful alternatives
- Scan a whole package.json
Cons
- Some packages fail to build
- Sizes are estimates
Best for
Choosing between npm librariesKeeping a frontend bundle smallReviewing dependencies
Ratings and reviews
No reviews yet. Community ratings and reviews are coming soon, so you can share how Bundlephobia worked for you.
Bundlephobia FAQ
Is Bundlephobia free?
Bundlephobia is free with no account.
Do I need an account to use Bundlephobia?
No. Bundlephobia works without signing up, so you can open bundlephobia.com and start using it right away.
What are some alternatives to Bundlephobia?
Similar free tools that also work without an account include Regex101, CyberChef, Crontab Guru, Transform, JSON Crack and Carbon.