897: Making Your App Feel Faster Than It Really Is

This episode explores techniques to enhance the perceived speed of web applications, differentiating it from actual speed improvements. The hosts begin by discussing the importance of user experience, emphasizing that a website "feels" faster when it responds instantly to user interactions. They introduce the concept of using "mousedown" or "pointerdown" events instead of "click" events to trigger actions sooner, while cautioning about potential UX issues. The conversation transitions to animation speed, advocating for shorter animation durations and cancelable animations to avoid frustrating users. Against the backdrop of slow feedback, optimistic UI is presented as a solution, where UI updates occur immediately upon user interaction, with server updates happening in the background. The discussion pivots to loading indicators, suggesting delaying their appearance for very fast operations to prevent unnecessary visual noise, and preloading content on hover to make navigation feel instantaneous. The hosts conclude by examining listener-submitted tips, including unconventional ideas like increasing UI size and intentionally slowing down animations to build trust.