Terser, a popular JavaScript parser and mangler/compressor toolkit for ES6+, has gained traction over previous minification tools such as UglifyJS and babel-minify. Minification involves removing unnecessary characters from source code to reduce its size without altering functionality, enhancing the efficiency of data transmission, especially in web and mobile apps. Terser's superior performance makes it a preferred choice among developers, and it is the default option in webpack >v4. While UglifyJS and babel-minify have their own capabilities, Terser offers advanced compression and mangling options that allow developers to balance code readability and performance. Babel-minify attempts to integrate Babel's toolchain for minification but remains experimental, whereas Terser continues to lead in performance, particularly for React-based projects. Additionally, the guide outlines the configuration of minifiers like Terser for React apps using webpack and highlights the growing popularity of bundlers such as Rollup and Parcel. Overall, Terser has emerged as the leader in JavaScript minification due to its efficiency and widespread adoption.