# Speeding up webpack performance with parallel builds

DevFeed: [Speeding up webpack performance with parallel builds](<https://devfeed.tech/articles/speeding-up-webpack-performance-with-parallel-builds-27937.md>)

Original publisher: [Read original article](<https://tech.trivago.com/post/2015-12-15-parallel-webpack/>)

Author: Patrick Gotthardt Follow

Published: 2015-12-15T00:00:00Z

Content type: tutorial

Language: en

Sources: [Trivago](<https://devfeed.tech/sources/trivago.md>)

Topics: [Webpack](<https://devfeed.tech/topics/webpack.md>), [build performance](<https://devfeed.tech/topics/build-performance.md>), [Code](<https://devfeed.tech/topics/code.md>), [npm](<https://devfeed.tech/topics/npm.md>), [JavaScript](<https://devfeed.tech/topics/javascript.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>)

Tags: [build](<https://devfeed.tech/tags/build.md>), [devops](<https://devfeed.tech/tags/devops.md>), [frontend](<https://devfeed.tech/tags/frontend.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [npm](<https://devfeed.tech/tags/npm.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [performance](<https://devfeed.tech/tags/performance.md>), [webpack](<https://devfeed.tech/tags/webpack.md>)

## AI overview

The article describes parallel-webpack, a tool created to build multiple targeted webpack configurations in parallel. It reports reducing a 32-variant build from about 16 minutes to 2 minutes, at the cost of higher CPU usage.

## Source excerpt

When using webpack to build your assets, it's only a matter of time until you wish for targeted builds. Whether it's the output of the library you're working on (CJS, UMD, AMD, Var, etc.), or the specific feature set (IE8 support, no IE8 support). parallel-webpack can run those builds in parallel.