Bundlephobia: Tool for Checking npm Package Size

Bundlephobia is an online tool that analyzes npm package sizes. It provides instant estimates of bundle weight before installation. Developers can view download size and dependency impact for a given package. The site shows visual breakdowns of code and asset contributions. Users can compare alternative packages to optimize performance. It helps teams reduce front‑end load times and bandwidth usage. The service is free and accessible via a simple web interface. Bundlephobia supports quick decision‑making during project planning.