Components and libraries for [[Web application]]s and websites have been developed to optimize file requests and reduce page load times by shrinking the size of various files.
JavaScript and [[Cascading Style SheetSheets]] (CSS) resources may be minified, preserving their behavior while considerably reducing their file size. Libraries available online are capable of minification and optimization to varying degrees. Some libraries also merge multiple script files into a single file for client download. JavaScript source maps can make code readable and debuggable even after it has been combined and minified.<ref>{{Cite web |last=Seddon |first=Ryan |date=March 21, 2012 |title=Introduction to JavaScript Source Maps |url=http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/ |url-status=dead |archive-url=https://web.archive.org/web/20211228111603/http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/ |archive-date=Dec 28, 2021 |website=HTML5 Rocks}}</ref>
