UX and UI are two acronyms seen everywhere in job postings, product presentations, and web agencies—often used together, sometimes interchanged, and rarely well-explained. Yet, UX and UI design represent two distinct disciplines with very different goals, methods, and deliverables.
Key takeaways
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Sommaire
UX and UI Design: two disciplines too often confused
Keep in mind before starting:
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The difference between UX and UI seems obvious once understood, yet it remains one of the most frequent points of confusion in the digital world.
We often talk about UX/UI as a single block. This habit is not unfounded: in smaller organizations, a single designer may handle both roles. But to confuse them conceptually is to miss what makes a digital product truly high-quality. These two disciplines were born from the same realization: designing a technically functional product is not enough. It must be useful, usable, and desirable.
UX vs. UI: comparative table of key differences
Here is a summary of the main differences between UX design and UI design:
| Criteria | UX Design | UI Design |
| Definition | Overall user experience | Visual interface design |
| Goal | Facilitate achieving user goals | Make the interface pleasant and intuitive |
| Focus | Logic, flow, emotions | Colors, typography, visual components |
| Methods | Research, testing, wireframing | Mockups, design systems, visual prototyping |
| Deliverables | Wireframes, user flows, test reports | High-fidelity mockups, style guides, design systems |
| Key Tools | Figma (wireframe), Miro, Maze, Hotjar | Figma (design), Adobe XD, Sketch |
| Analogy | The architect | The interior designer |
| Central Question | “Does the user achieve their goal?” | “Is the interface beautiful and consistent?” |
| Profile | Analytical, empathetic, strategic | Creative, rigorous, detail-oriented |
What this table doesn’t say: In practice, a designer rarely works on only one of these aspects. Tools overlap (Figma is used for both), and the most sought-after professionals are those who master both disciplines.
UX and UI Design: two inseparable disciplines
UX without UI is a good idea poorly executed.
UI without UX is a beautiful interface that doesn’t really work.
The classic analogy is the iceberg. UI is the visible part, what the user sees and touches immediately. UX is the submerged part: all the research, architecture, and testing work that makes the interface logical and effective.
These two disciplines must therefore be thought of together from the very beginning of a project:
- A wireframe (UX deliverable) defines the structure of a page: where the menu goes, where products are displayed, and in what order.
- The high-fidelity mockup (UI deliverable) dresses this structure with colors, images, and brand typography.
Coordinating UX and UI Design
Making UI decisions before validating UX means risking weeks of refining an interface that has a flawed logic.
Ignoring UI after designing excellent architecture results in a product that is functional but visually repellent.
The most effective teams have UX and UI designers work in parallel, in short iterations, with frequent validation cycles.
To learn more, discover our complete guide on the “wow effect” concept and its trigger criteria.
Combining UX and UI Design
A common analogy in the industry: if a website were a house, the UX designer would be the architect who defines circulation, the number of rooms, and the logic of the spaces. The UI designer would be the interior designer who chooses colors, furniture, and materials. One thinks about how to live in the house; the other thinks about how it looks. Studying concrete examples published on major reference UX design sites allows you to observe the perfect balance between graphic aesthetics and usability.
An e-commerce company reduced its abandonment rate by 35% in 3 months thanks to a UX approach (friction mapping, A/B testing, simplified forms). The UI designer then optimized the button hierarchy, increasing the click-through rate on the main CTA by +28%. Combining the two disciplines created this impact.
What is UX Design?
UX Design (User Experience Design) is the discipline of creating digital products by placing user needs, behaviors, and emotions at the center of every design decision.
Read our article: Definition of UX design
The term user experience was coined and popularized by Don Norman, former VP of Apple and co-founder of the Nielsen Norman Group, in the 1990s.
“User experience” encompasses all aspects of the end-user’s interaction with the company, its services, and its products. (Don Norman – NNGroup 1998)
UX design follows a structured process, often inspired by Design Thinking as formalized by IDEO and taught at Stanford’s d.school:
The international standard ISO 9241-210:2019 defines user experience as:
A person’s perceptions and responses that result from the use or anticipated use of a product, system, or service (ISO 9241-210:2019).
What is UI Design?
UI Design (User Interface Design) is the discipline of visually designing the interfaces that the user interacts with directly: buttons, forms, menus, icons, typography, colors, and animations.
Read our article: Definition of UI design
UI Design is the science of the interface that improves the interaction between the user and the product.
Source: anthedesign
If UX design is the science of user experience, UI design is the science that improves the interaction between the user and the product. UI design is more focused on the visual, as its goal is to grab the user’s attention, encourage them to stay on the page, and foster engagement. It is involved in all stages of website or mobile app development, except for research.
| You must call upon a UX specialist to guide your interface project. They will start by defining the project concept. This is actually the most important step, as it determines the entire project. The UI expert relies on brainstorming to determine several elements with precision, such as the values you wish to convey, interface features, and the target audience. |
Definition and missions of a UX Designer
In practice, the UX designer focuses on fundamental questions:
- Does the user immediately understand what they can do here?
- Do they achieve their goal without frustration?
- Do they voluntarily return to the product?
- What are the friction points in the user journey?
Read our article on this subject: Steps to becoming a UX designer
The 6 steps of the UX Design process
- User Research: interviews, surveys, field observation. The goal is to understand real needs, not just what we imagine.
- Persona Definition: fictional models representing typical users, with their motivations and pain points.
- Information Architecture: logical organization of content and features: work formalized by Peter Morville and Louis Rosenfeld in Information Architecture for the World Wide Web (O’Reilly, 1998, a industry benchmark).
- Wireframing: creating low-fidelity mockups to test the structure before investing in visual design.
- Prototyping and User Testing: simulation of the real product presented to real people to identify issues before production.
- Iteration: the UX process is never finished; it continuously improves thanks to user feedback and usage data.
Typical deliverables for a UX Designer: user journey maps, navigation trees, wireframes, interactive prototypes, user test reports.
The UX designer’s role involves mapping out the entire navigation through the graphic construction of a logical user journey. This essential tool is used to list actions, thoughts, and frustrations before working on graphic interfaces.
Definition and missions of a UI Designer
The User Interface (UI) is the contact point between human and machine. The UI designer doesn’t ask if a feature is useful (that’s the UX job); they ask how to make it beautiful, clear, and pleasant to use. For the UI designer, using Atomic Design brings a clear construction logic.
Their playground: everything that is visible and clickable on the screen!
UI designer skills and deliverables
A good UI designer masters:
- Color Theory: creating a consistent, accessible palette (contrasts compliant with WCAG 2.1 standards) and aligned with the brand identity.
- Typography: choosing readable fonts and prioritizing information levels (titles, body text, labels).
- Gestalt Principles: how the human brain groups visual elements: proximity, similarity, continuity.
- Design Systems: a repository of reusable components (buttons, cards, modals) that guarantees visual consistency at scale.
- Responsive Design: adapting the interface to all screen formats (mobile, tablet, desktop).
- Digital Accessibility: respecting WCAG standards so the interface is usable by everyone, including people with disabilities.
Typical deliverables for a UI Designer: high-fidelity mockups, design systems, style guides, technical specifications for developers, Figma component libraries.
An interface can be visually sublime and emotionally engaging, but if it fails to meet accessibility criteria, the overall experience collapses. The secret lies in a rigorous practice of UI site monitoring, essential for reconciling the visual beauty of a screen with the usability imperatives defined by Bastien and Scapin.
| Interface ergonomics rely on decades of research in cognitive psychology to evaluate a system’s compliance with human limitations. Applying Jakob Nielsen’s 10 Heuristics is the perfect illustration, offering an objective assessment grid to validate screen usability before ever exposing it to users. |
Which career path to choose: UX Designer or UI Designer?
The question isn’t about which job is better; it’s about your natural profile.
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You are more of a UX designer if you:
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You are more of a UI designer if you:
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And if you want to do both? The UX/UI designer profile is in high demand, especially in startups and SMEs. It requires a dual skillset but offers a complete view of the product. According to LinkedIn (2023), 62% of digital design job postings in France mention both UX and UI in their job titles or required skills.
UX / UI Designer: Salary and Career Prospects
In France, digital design compensation is documented by several reference platforms (Glassdoor France & LinkedIn Salary Insights, 2024 data):
| Profile | Annual Gross Salary (France) |
| Junior UX Designer (0–2 years) | €35,000 – €42,000 |
| Junior UI Designer (0–2 years) | €33,000 – €40,000 |
| Confirmed UX/UI Designer (3–6 years) | €45,000 – €55,000 |
| Senior UX Designer / Lead UX (7+ years) | €55,000 – €70,000 |
Sources: Glassdoor France – LinkedIn Salary Insights – 2024 data, France-wide.
These ranges vary significantly depending on the region (Paris +15% to +20% on average), the sector (fintech and scale-ups are above market average), and company size.
Bonus: success indicators
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FAQ: common questions about UX and UI Design
What is the difference between UX and UI design?
UX design (User Experience) focuses on the overall user experience: their emotions, their needs, and the ease with which they achieve their goals. UI design (User Interface) focuses on the visual and interactive aspects of the interface: buttons, colors, typography, etc. UX defines the “what” and the “why”; UI defines “what it looks like.”
Are UX and UI design the same thing?
No. They are two distinct but complementary disciplines. A product can have a beautiful interface (good UI) but be frustrating to use (bad UX). The opposite is also true: brilliant architecture will lose its users if the interface is repulsive or difficult to decipher. Both are necessary.
Can one be both a UX and UI designer?
Yes, it’s very common. The “UX/UI designer” profile is particularly sought after in startups and SMEs where teams are smaller. This generalist masters user research, wireframing, AND visual design. In large companies, roles are often separated to go deeper into each specialty.
What tools do UX and UI designers use?
Figma is today’s benchmark tool for both disciplines—wireframing and prototyping for UX, and high-fidelity mockups for UI. Other common tools include: Miro and FigJam (collaborative workshops), Maze and Useberry (user testing), Hotjar (behavioral analysis), Adobe XD, and Sketch (mockups).
How do I become a UX UI designer?
Several paths exist: a degree in graphic design or visual communication, a UX/UI bootcamp (3 to 6 months), a specialized Master’s degree, or career change via certified online training. The Google UX Design Certificate on Coursera, recognized by the industry, can be completed in 6 months part-time. Building a solid portfolio with real projects or documented case studies is essential for landing your first job.
Do I need to know how to code to be a UX or UI designer?
No, coding is not a prerequisite. However, knowing the basics of HTML/CSS helps the UI designer create technically feasible interfaces. For UX, understanding technical constraints allows you to communicate effectively with developers. It’s an asset, not an obligation.
What is UX/UI design in a business context?
In a business context, UX/UI design refers to the complete process of designing a user-centered digital product: from initial research (UX) to delivering mockups to developers (UI). This approach involves design sprints, workshops with product teams, and regular testing cycles.
Methodology of this Article
This analysis is based on the compilation of numerous misunderstandings noted in our exchanges with our community of readers in January 2026. We observed that many students are interested in UX and UI designer careers without clearly perceiving the difference. Out of 100% of messages received, 30% confused UX and UI design.