rollup-plugin-terser is a Rollup plugin utilizing Terser to minify JavaScript bundles. It optimizes code size and improves performance by removing dead code, shortening variable names, and applying other advanced minification techniques. It seamlessly integrates into the Rollup build process, offering a simple way to produce production-ready, highly optimized JavaScript for web applications. Configuration options allow for fine-tuning Terser's behavior to meet specific project requirements, balancing minification aggressiveness with compatibility concerns.