@rollup/plugin-terser is a Rollup plugin that minifies JavaScript code using Terser. It significantly reduces final bundle sizes, improving website loading times and overall performance. This plugin is crucial for production builds, helping to optimize code for deployment. It easily integrates into your Rollup configuration, allowing for customizable Terser options to fine-tune the minification process. By removing whitespace, shortening variable names, and applying other compression techniques, it ensures efficient and streamlined code delivery.