[{"data":1,"prerenderedAt":55},["ShallowReactive",2],{"\u002Fglossary\u002Fasync-css-js-requests":3,"\u002Fglossary\u002Fasync-css-js-requests:related":38},{"id":4,"title":5,"author":6,"authorImage":7,"body":8,"category":23,"date":24,"description":25,"draft":26,"extension":27,"letter":28,"meta":29,"navigation":30,"path":31,"readTime":32,"related":33,"seo":34,"stem":36,"term":5,"__hash__":37},"glossary\u002Fglossary\u002Fasync-css-js-requests.md","Async CSS\u002FJS Requests","Fabian Krumbholz","\u002Fimages\u002Fauthors\u002Ffabian-krumbholz.webp",{"type":9,"value":10,"toc":19},"minimark",[11],[12,13,14,18],"p",{},[15,16,17],"strong",{},"Async"," (asynchronous) requests are requests for CSS or JavaScript files that are loaded in the background without blocking the browser from rendering the rest of the page. Using async loading is a key performance optimization technique because it allows the user to see and interact with the initial page content much faster.",{"title":20,"searchDepth":21,"depth":21,"links":22},"",2,[],null,"September 30, 2025","Async (asynchronous) requests are requests for CSS or JavaScript files that are loaded in the background without blocking the browser from rendering the rest of the page.",false,"md","A",{},true,"\u002Fglossary\u002Fasync-css-js-requests","1 min read",[],{"title":35,"description":25},"Async CSS\u002FJS Requests: Definition | Web Performance Glossary","glossary\u002Fasync-css-js-requests","3nPI_bGF3SL9oEqH5XENHEg1bHoyhWphwU5Ru-2Hoi0",[39,43,47,51],{"path":40,"title":41,"description":42,"letter":28},"\u002Fglossary\u002Fa-b-testing","A\u002FB Testing","A\u002FB testing is a method of comparing two versions of a webpage to see which one performs better. For example, an e-commerce store might show 50% of its visitors a green \"Buy Now\" button (Version A)…",{"path":44,"title":45,"description":46,"letter":28},"\u002Fglossary\u002Favif","AVIF","AVIF (AV1 Image File Format) is a modern, next-generation image format that provides significantly better compression than older formats like JPEG and WebP.",{"path":48,"title":49,"description":50,"letter":28},"\u002Fglossary\u002Fabandonment-rate","Abandonment Rate","Abandonment Rate is a metric that measures the percentage of users who start a specific process (like a checkout funnel or a sign-up form) but leave before completing it.",{"path":52,"title":53,"description":54,"letter":28},"\u002Fglossary\u002Fabove-the-fold","Above the Fold","This is a term originally from newspaper design that now refers to the portion of a webpage that is visible to a user without having to scroll down. Content \"above the fold\" is the very first thing a user sees.",1787756711609]