UI/UX Best Practices

UI/UX Dos

Prioritize Accessibility: Ensure text has a high contrast ratio and include alternative text for all images.
Maintain Consistency: Use uniform typography, spacing systems (e.g., 8-pixel grids), and color palettes across all pages to reduce user cognitive load.
Design Clear Visual Hierarchy: Use size, weight, and strategic whitespace to make the primary action (CTA) stand out clearly.
Implement Single-Column Forms: Keep form fields stacked in a single column for an easier, seamless input flow.
Optimize for Touch (Fitts's Law): Ensure all buttons and clickable elements have a minimum hit target of 44 × 44 pixels so they are easy to tap on mobile.
Apply Hick's Law: Limit user choices to prevent decision paralysis. Simplify navigation and form inputs.
Chunk Information (Miller's Law): Break down complex content into smaller, readable chunks (groups of 5-7 items max).
Structure via Boundaries (Law of Common Region): Group related content within clear visible containers (like cards or border divisions).
Leverage F-Shaped Scanning: Position critical branding and primary CTA paths at the top and left of layouts where human eyes naturally scan first.

Don't Let Aesthetics Compromise Usability: Avoid choosing fancy fonts, hidden navigation menus, or complex animations if they make it difficult for users to find information.
Don't Use Color Alone to Convey Meaning: Always pair colors with labels or icons (e.g., in error states) to accommodate color-blind users.
Don't Auto-Play Videos with Sound: This is highly disruptive; give users full control over media.
Don't Overcrowd the Interface (Whitespace mastery): Over-emphasizing every element dilutes the page's purpose. Leave ample whitespace around sections and text to reduce cognitive load.
Don't Open Internal Links in New Tabs: Let users control their own browsing journey instead of hijacking their back button.
Don't Use Text Gradients: Avoid using gradient colors on text elements to maintain maximum readability, high contrast, and a clean, non-AI-generated look.
Don't Violate Familiarity (Jakob's Law): Adhere to common design patterns (e.g. logo top-left redirects home) so users do not have to relearn basic navigation.

Touch-Targets: Mindestens 44x44 CSS-Pixel für interaktive Elemente.
Kontraste: Text-Kontrast mind. 4,5:1. Bei Liquid Glass backdrop-blur-xl und deckende Hintergrund-Opacities sicherstellen.
Tastatur-Navigation: Sinnvolle :focus-visible Ringe für die Tab-Navigation nutzen.
Screenreader: Explizite <label>-Tags für Inputs. Akkordeons mit aria-expanded und aria-controls. Dekorative Icons mit aria-hidden="true".

Zero-Third-Party-Requests: Keine externen CDNs (Fonts, Skripte, Icons lokal ausliefern).
Keine Cookies/Opt-Ins: Ausschließlich funktionale Daten (wie Darkmode im LocalStorage) verwenden.
Formularverarbeitung: DSGVO-konforme Übermittlung ohne ungefragte US-Drittdienste.

Lesbarkeit: Aurora-Glows dezent halten (z-0, Opacity max. 10-20%) und Text lesbar halten.
Kanten-Effekt: Hauchdünne Borders (border-[0.5px] oder border) mit semi-transparenten Farben für edle Lichtkanten.
Theme-Transition: Weiche Farbübergänge (transition-colors duration-300) auf großen Flächen zur Vermeidung harter Blitze.

Kein FOUC: Darkmode-Erkennungsskripte blockierend im <head> als is:inline laden.
Image-Optimierung: Astros <Image/> Komponente mit WebP/AVIF und festen Dimensionen verwenden, um CLS zu verhindern.
Teilhydrierung: Clientseitiges JS minimieren. Animationen über CSS-Keyframes und nativen IntersectionObserver steuern.

Verständlichkeit: Kundensprache statt Tech-Sprech.
Sorgenfrei-Versprechen: FAQ zu Änderungen, kostenlosem Domain-Umzug und Festpreisgarantie direkt positionieren.