← Glossary

    Web & UX

    UI (User Interface)

    Short definition

    UI is the visual layer of a product — the buttons, type, color, spacing, and motion the user sees and touches.

    In depth

    UI is what you see; UX is how it feels to use. Strong UI uses a tight component system, consistent type scale, accessible color contrast, and intentional spacing to create rhythm and hierarchy. UI choices have measurable conversion impact — button color contrast, form field length, micro-copy, and motion design all influence completion rates. UI is the surface; UX is the experience underneath.

    Example

    Changing a low-contrast 'Get Quote' button to a high-contrast orange variant lifts form-fill rate 22% in an A/B test.

    Related terms

    UX (User Experience)A/B TestingCRO (Conversion Rate Optimization)

    Related glossary

    Keep going from here.

    Glossary

    UX (User Experience)

    UX is the discipline of designing how a person feels and what they can do when they use a product, with the goal of making the desired action effortless.

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    Glossary

    A/B Testing

    A/B testing is splitting traffic between two versions of a page or element to measure which one produces a better outcome with statistical confidence.

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    Glossary

    CRO (Conversion Rate Optimization)

    CRO is the practice of getting more visitors to take the action you want — call, fill a form, or buy — without having to spend more on traffic.

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