WHEN TO USE MODAL VS DIALOG COMPONENTS

Summary from the TLDR Design newsletter

Modal dialogs block all page interaction and force immediate attention, making them suitable for critical actions like confirming deletions or collecting required information. In contrast, non-modal dialogs allow continued interaction with underlying content, making them better for supplementary information or optional settings. Developers should prioritize keyboard accessibility, proper contrast ratios, and clear escape routes, while avoiding overuse of modals to prevent workflow disruption and user frustration.