12 Types of Web App UI Design Patterns for SaaS in 2026 

Web app UI design patterns include cards, sidebar navigation, progressive disclosures, skeleton screens, empty states, modals, tabbed navigation, search and filter, data tables, notifications, and AI UI patterns (an emerging theme of 2026). 

An UI design pattern defines how to display a particular UI element (such as lengthy forms or multi-section content). A design pattern is a repository of design patterns, component libraries and tokens, helping designers build a comprehensive experience. So, a design pattern is a subset of a design system.  

Cards are best to help users scan or browse elements visually for a single record (for example, Trello). Data tables help them compare two data sets side-by-side, or bulk-select them when needed (CRM platform Hubspot is the best example).  

Infinite scroll is good where content discovery (social feed) is the end goal, and people don’t have a specific destination. But it cannot be used to scroll through search results or financial transaction records, such as Google, because people need to return to a specific page or URL. 

UI design patterns must be supplemented by ARIA labels, correct states (enable/ disable), and navigable by keyboard. They must also be supported by visible focus indicators and be readable by screen readers (NVDA, JAWS, and VoiceOver).  

AI UI design patterns are inherent to AI systems, and include streaming text reveal, confidence indicators, error and retry patterns for LLM failures, prompt input fields, and human override, all belong to this category. These patterns help users select or reject AI-generated responses, and improve the prompt’s quality.