Bundlephobia NPM Package Size Checker
Check minified and gzipped bundle sizes, tree-shaking support, and download times for NPM packages before installing them.
Bundlephobia NPM Package Weight Inspector
Find the performance cost and download impact of adding an npm package to your web bundles.
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Tree Shakeable2KB immutable date time library alternative to Moment.js with the same modern API.
Estimated Client Download Time on Mobile Networks
Bundle Weight Comparisons & Modern Alternatives
| Category | Heavyweight Package | Gzip Size | Lightweight Alternative | Gzip Size | Payload Savings |
|---|---|---|---|---|---|
| Date Utilities | moment | 71.2 kB | dayjs | 2.9 kB | 96% lighter |
| Utility Helpers | lodash | 24.5 kB | radash | 4.2 kB | 83% lighter |
| HTTP Client | axios | 13.1 kB | ky (or native fetch) | 3.4 kB | 74% lighter |
Informational & Educational Disclaimer
This tool is designed for informational and educational estimation purposes only. Calculations are based on user-provided inputs and standard mathematical formulas. For official tax, legal, or financial decisions, please consult certified professionals or official government publications.
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Tool Under Active Refinement
This tool is currently an early prototype undergoing active improvement. It is being furnished and polished for improved performance, accuracy, and functionality, and will be fully furnished soon.