HTML <details> and <summary> elements provide native collapsible functionality without requiring JavaScript, offering better performance and accessibility out of the box. They include built-in keyboard navigation, screen reader support, and semantic meaning that assistive technologies understand. Our accordion module leverages these semantic elements while adding enhanced content management capabilities through Sanity's rich text editor, consistent cross-browser styling, and structured schema.org markup generation for better SEO.

The module includes automatic schema.org markup generation for FAQ-structured content when enabled, which can improve search result visibility through rich snippets. All accordion content remains accessible to search engine crawlers regardless of collapsed state, ensuring no content is hidden from indexing. The structured markup also helps search engines better understand content relationships.

Yes, the "Expanded by default" option creates a mutually exclusive expansion pattern where opening one section automatically closes others. This is useful for content that benefits from focused attention or when you want to maintain a compact vertical layout. The default behavior allows multiple sections to remain open for comparison purposes.

Each accordion section has a simple "Expanded by default" boolean option that controls initial rendering state. This eliminates the need for custom JavaScript or state management libraries to handle initial expansion. The setting is applied at build time, ensuring consistent behavior across page loads and avoiding hydration issues.