The chat widget is the customer-facing interface for live chat, typically appearing as a button or icon that expands into a conversation window. Widget customization: - Colors and branding - Position on page - Icon and launcher style - Welcome message - Agent photos - Pre-chat forms - Business hours display Widget features: - Minimize/maximize - Sound notifications - Typing indicators - File attachments - Emoji support - Mobile responsive - Offline mode Widget best practices: - Match brand design - Not intrusive - Mobile-friendly - Clear status (online/offline) - Accessibility compliant - Fast loading Advanced options: - Multi-language support - Custom CSS - SDK customization - Page-specific triggers