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webpack vs Rollup: catalog facts
webpack	Rollup
Best for: Web developers bundling front-end code and assets for production	Best for: Bundling JavaScript libraries and custom build pipelines
Free Free and open source.	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Handles HTML, CSS, JavaScript and WebAssembly Targets browsers, Node.js, Deno and Bun All 4 strengths for webpack Handles HTML, CSS, JavaScript and WebAssembly Targets browsers, Node.js, Deno and Bun Large ecosystem of loaders and plugins Mature and widely used	Thorough tree-shaking Many output formats including ESM, CommonJS and UMD All 4 strengths for Rollup Thorough tree-shaking Many output formats including ESM, CommonJS and UMD Simple plugin API used by Vite Code splitting without extra loader code
Configuration can grow complex for large projects Requires Node.js and npm	No built-in development server More configuration than preconfigured tools like Vite
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License not stated
No account needed	No account needed
Offline features available	Offline features available
Official website Full listing and sources Sources for webpack webpack.js.org Catalog checked September 24, 2026	Official website Full listing and sources Sources for Rollup rollupjs.org Catalog checked October 1, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.