Below roughly 400 milliseconds of system response, people stop waiting on the machine and productivity rises sharply.
Law · Performance
Tag
loading
Entries tagged loading, drawn from across the library. Tags cut through the section structure, which is where most of the useful connections are.
7 entries across 3 sections
Type
Category
Level
7 entries
The interface should always tell the user what is going on, through timely and appropriate feedback.
Heuristic · Nielsen heuristics
What to show while waiting, chosen by how long the wait is and whether its length is known.
Pattern · Content states
Grey placeholders in the shape of the content that is coming, which reads as progress rather than as waiting.
Pattern · Content states
Communicating how far through something the user is, which requires honesty about what you can measure.
Component · Feedback
Say what is happening, how long it will take if you know, and whether it is safe to leave.
UX writing · UX writing
Speed is a usability property, and the metrics that matter are the ones measured on real devices.
UI foundation · Performance