[{"data":1,"prerenderedAt":56},["ShallowReactive",2],{"\u002Fglossary\u002Fa-b-testing":3,"\u002Fglossary\u002Fa-b-testing:related":39},{"id":4,"title":5,"author":6,"authorImage":7,"body":8,"category":24,"date":25,"description":26,"draft":27,"extension":28,"letter":29,"meta":30,"navigation":31,"path":32,"readTime":33,"related":34,"seo":35,"stem":37,"term":5,"__hash__":38},"glossary\u002Fglossary\u002Fa-b-testing.md","A\u002FB Testing","Fabian Krumbholz","\u002Fimages\u002Fauthors\u002Ffabian-krumbholz.webp",{"type":9,"value":10,"toc":20},"minimark",[11],[12,13,14,15,19],"p",{},"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) and the other 50% a blue button (Version B) to see which color leads to more sales. In the context of web performance, A\u002FB testing is used to measure the impact of a faster website. By comparing a group of users with Speed Kit enabled against a control group without it, businesses can directly measure the uplift in key metrics like conversion rate. However, accurately A\u002FB testing for speed introduces unique challenges, which are addressed by Speed Kit's ",[16,17,18],"strong",{},"Speed Impact Chart"," methodology.",{"title":21,"searchDepth":22,"depth":22,"links":23},"",2,[],null,"September 30, 2025","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)…",false,"md","A",{},true,"\u002Fglossary\u002Fa-b-testing","1 min read",[],{"title":36,"description":26},"A\u002FB Testing: Definition | Web Performance Glossary","glossary\u002Fa-b-testing","JcdCF5Qrq_tFz4A3sx9-A2Ga_6ZV5ai2TscBhPoERHU",[40,44,48,52],{"path":41,"title":42,"description":43,"letter":29},"\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":45,"title":46,"description":47,"letter":29},"\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":49,"title":50,"description":51,"letter":29},"\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.",{"path":53,"title":54,"description":55,"letter":29},"\u002Fglossary\u002Facceleration-rate","Acceleration Rate","The acceleration rate is a key performance indicator specific to Speed Kit that measures the percentage of whitelisted page views that were successfully accelerated by the Service Worker.",1787756711609]