User Experience
Design & UXHow it feels to use a product from start to finish — the speed, the clarity, the flow, the copy, the moments of friction, the parts that just work — not just…
Design & UX
User Interface
UI
Robert KlimantCo-founder
What is User Interface?
A user interface, or UI, is the visible layer of a digital product — the buttons, menus, forms, icons, layouts, and typography that a person interacts with directly. UI is the part of UX you can see. Where UX is the whole experience including content, flow, and performance, UI is the surface — what gets touched, clicked, and read. Good UI is clear, consistent, and gets out of the user's way.
Why it matters
UI is the part of the product that does the talking. Before a visitor reads a word of copy, the interface has already said something about your brand — careful or sloppy, modern or dated, confident or hedging. Visual choices that look like decoration are actually persuasion. A clean, opinionated UI builds trust in seconds. A cluttered, generic one leaks it just as fast. The lazy version is to grab a template and ship. The expensive version is to design a UI that fits your audience, your brand, and the specific decision you want them to make.
How it works
A designer translates the wireframe into a high-fidelity interface — applying typography, color, spacing, imagery, and motion. Every visible element gets specified: the primary button, its hover state, its disabled state, its loading state. The same goes for forms, cards, navigation, and modals. The designer works against a design system or component library so the UI stays consistent across pages. Once approved, engineering implements the interface in code — HTML, CSS, and a framework like React — with the same components mirrored from Figma. The final UI is what the visitor actually sees, but it's the visible tip of a much deeper system.
Related terms
Design System
Design & UXA shared set of components, design tokens, and rules a team uses to design and build a product, so every page looks coherent and no one is reinventing a button…
Component Library
Design & UXA reusable set of pre-built UI pieces — buttons, forms, cards, modals, navigation — that designers and developers pull from instead of building each one fresh…
Design Tokens
Design & UXThe named values behind a design system — colors, spacing, font sizes, radii — stored as variables so a single change updates every screen instead of every…
Visual Hierarchy
Design & UXThe way a page guides the visitor's eye — through size, weight, color, contrast, and spacing — so the most important thing gets seen first and the rest gets…
Typography
Design & UXThe craft of choosing and arranging type on a website — fonts, sizes, weights, line height, letter spacing, line lengths — to make content readable, scannable,…
Color System
Design & UXA defined palette of brand and UI colors — with rules for when and how to use each one — so a product stays visually consistent over time and doesn't quietly…
Micro-Interactions
Design & UXThe small moments of feedback and motion in an interface — a button that nudges when hovered, a form field that confirms it heard you, a toggle that slides —…