UX/UI optimization aims to help people understand an interface and complete their tasks with fewer difficulties. To work on conversion, start by detecting obstacles in navigation, reading, forms, and performance; then test improvements and measure completed actions. A redesign can facilitate a purchase or an inquiry, but it does not guarantee sales increases.
What UX and UI mean and how they relate to conversion
User experience (UX) encompasses how a person experiences the journey to resolve a need. User interface (UI) includes the controls and visual resources they interact with: buttons, menus, fields, text, and states. Working on both connects the journey’s structure with an understandable presentation.
A conversion can be a purchase, a subscription, or a submitted inquiry. First define which one matters to the business. Someone clicking a button does not necessarily mean they completed the action or that the contact has commercial value. The offering, traffic quality, and subsequent service also influence the result.
Five UX/UI principles to facilitate conversions
- Simplicity and clarity: show a recognizable hierarchy, explain the offering, and prevent secondary tasks from competing with the main objective. Simplifying does not mean hiding important terms.
- Performance: review loading, responses to interactions, and unexpected content movement. Do not assume a fixed threshold in seconds predicts abandonment across every audience.
- Responsive design: check the experience on different screens and devices. Use your data to understand the access context, without assuming a universal split between mobile and desktop.
- Clear calls to action: use specific labels, such as “Submit inquiry,” and explain what happens next. The button should stand out without resorting to false urgency.
- Continuous evaluation: combine task observation, usage data, and experiments when there is sufficient volume. The team’s aesthetic preference does not demonstrate that a variant works better.
How to implement a UX/UI improvement step by step
1. Organize navigation around tasks
Organize content with labels the audience understands. Review whether people find services, prices when appropriate, help, and contact information. Dropdown menus can be useful if they work with a keyboard and on mobile; adding options without hierarchy can make the journey harder.
An unconventional structure deserves testing before implementation. Ask users to find information or complete an action and observe where they stop. Visual novelty should contribute something to the task, not require every visitor to learn an unnecessary system.
2. Test the complete mobile journey
Review readability, spacing between controls, and easy-to-complete fields. Avoid overlays that hide the main action. Designing for a small screen first can help prioritize content, but it does not remove the need to test desktop, different orientations, and different forms of interaction.
Test from the landing page to final confirmation, including form errors and returning to a previous step. If people lose what they have already typed, the difficulty will remain even if the initial design looks good.
3. Incorporate accessibility from the design stage
Review field labels, navigation order, visible focus, and understandable error messages. Do not use color alone to communicate what must be corrected, in accordance with the W3C use-of-color criterion. Also check text contrast against the background. These reviews are a starting point and do not, by themselves, certify the site’s complete accessibility.
4. Personalize only when it helps resolve a need
Content and recommendations can adapt to context, for example by showing resources related to a category viewed. Treat that personalization as a hypothesis that may help or distract. Do not assume that collecting more data or anticipating every action necessarily improves the experience.
Define what information is needed, respect privacy decisions, and avoid capturing sensitive data in recordings or research forms. Maintain understandable navigation even if the person does not accept optional personalization. Real-time recommendations only make sense if they address a need and can be evaluated.
5. Measure results before expanding changes
Record a baseline, formulate a hypothesis, and define the primary metric. For example: “Clarifying required fields could reduce errors when submitting an inquiry.” Observe completed submissions and their quality, as well as abandonment and errors. This example proposes a test; it does not describe a result obtained by Agencia Cero.
In an A/B test, plan variant allocation, the required volume, and the stopping criterion. Do not declare a winner based on an early fluctuation. If there is insufficient traffic, usability tests can reveal obstacles, although they cannot estimate a percentage increase in conversions.
Tools for researching, prototyping, and testing UX/UI
Choose tools according to the task, integrations, and privacy conditions. Review availability, licenses, and compatibility before incorporating them into the project.
- Prototypes: Figma and Sketch let you design and explore journeys before development. A prototype serves to evaluate an idea; it does not replace testing the implemented site.
- Usage observation: Hotjar, now integrated into Contentsquare, offers heatmaps and recordings alongside other features. These signals help formulate questions, but they do not, by themselves, explain why a person leaves. Configure capture to protect personal information.
- Experimentation: use a testing solution compatible with your site and measurement. Google Optimize and Optimize 360 became unavailable on September 30, 2023; they should not be listed as active tools for a new project.
- Tools cited in older guides: Adobe XD remains in maintenance mode. InVision’s design products, including Prototype and DSM, ended on December 31, 2024. Review current options instead of basing a new workflow on those historical recommendations.
UX/UI, performance, and organic search rankings
An understandable, functional site benefits people, but not every experience improvement is a direct ranking factor. Google states that Core Web Vitals are part of its ranking systems and that good results do not guarantee appearing first. Work on relevant content and accessibility alongside performance, without making a technical score the sole objective.
The role of artificial intelligence and augmented reality
Artificial intelligence can support content or interaction proposals, and augmented reality can be explored when visualizing a product in context helps people decide. These are design possibilities requiring evaluation, not requirements for every business. Consider errors, privacy, accessibility, and performance before adding a feature, and offer an alternative journey when appropriate.
Frequently asked questions about UX/UI optimization
What should be improved first?
Problems that prevent completion of an important task: forms that fail, missing essential information, inaccessible controls, or confusing steps. Prioritize using evidence of usage and the journey’s importance to the business.
How much can UX/UI increase conversion?
There is no percentage valid for every site. The effect depends on the initial problem, offering, traffic, and implementation. Compare results using a defined methodology and distinguish usability improvements from confirmed commercial results.
To review the difficulties in your digital journey, explore Agencia Cero’s strategic UX/UI service. If the challenge includes structure, content, and development, also explore strategic web design. You can contact us to discuss the scope your project needs.
