In user interfaces, a spinner is a normal indicator of thinking or loading. However, the modern web is often build from blocks that could be loading independently

This principle seems obvious, but there are too many interfaces that violate it. Thus, a blog post

Here is my talk from FDConf, Minsk about feedback in the user interface

A slider is a simple user interface control where you adjust some value by dragging a handle in a groove

I’ve recently designed the new user interface for Mimic, a web developer tool for mocking server responses in a browser

Immediate feedback is one of the core principles of good user interface design. But what if the data is unavailable for the feedback?