Webpack Bundle Stats Analyzer | Find Your Largest Modules

Webpack bundle stats analyzer reads stats.json to rank your largest packages, modules and chunks, and flags duplicate versions. Free, runs in your browser. Designed specifically for developers and professionals, this free online analyzer runs entirely in your browser to process tasks quickly and securely. Enjoy unlimited usage with no data tracking and no registration required.

Also known as: webpack bundle analyzer online · analyze webpack stats json · webpack stats json viewer · find largest modules in bundle · duplicate package detection bundle · javascript bundle size analysis

json tools

image tools

analyzers

stats.json Input

Bundle Breakdown

Your bundle breakdown will appear here

Run `webpack --json > stats.json`, paste or upload the file, and click Analyze Bundle.

About Bundle Stats Analyzer

Paste a webpack-format stats.json and see where your bundle size actually goes: largest packages and modules, the node_modules split, per-chunk sizes, and packages bundled twice.

Key Features

Ranks packages, modules, assets, and chunks by size with share-of-total bars, so the thing worth deleting is at the top of the list
Flags packages resolved at more than one node_modules path, which is how two versions of the same dependency end up shipping to users
Reads webpack, Rspack, and Next.js stats files, and warns about JavaScript or CSS assets over webpack's default 244 kB performance budget

Use Cases

Find out which dependency is responsible for a bundle that grew after a routine upgrade
Prove a duplicate-version problem before spending time on resolutions or overrides
Check a production build against a size budget without installing another plugin in CI

Related Keywords

webpack bundle analyzer online

analyze stats json

webpack stats json viewer

find largest modules in bundle

duplicate package detection bundle

javascript bundle size analysis

Privacy & Security

All processing happens locally in your browser. Your data never leaves your computer, ensuring complete privacy and security.

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Frequently asked questions

What is Webpack Bundle Stats Analyzer used for?

Webpack bundle stats analyzer reads stats.json to rank your largest packages, modules and chunks, and flags duplicate versions. Free, runs in your browser.

Is Webpack Bundle Stats Analyzer free to use?

Yes. Webpack Bundle Stats Analyzer is completely free with no usage limits, and there is no paid tier required to use it.

Do I need an account to use Webpack Bundle Stats Analyzer?

No. Webpack Bundle Stats Analyzer works immediately in your browser with no signup, login, or email address required.

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