The Portal Open Data Denmark Theme extension provides a specialized, culturally adapted user interface for the Danish national open data portal portal.opendata.dk. This comprehensive theming solution implements Danish design standards, language localization, and user experience patterns specifically tailored for Danish government data publication requirements. The extension includes customized templates, styling, and navigation elements that reflect Danish digital government guidelines and accessibility standards. It features multilingual support with Danish as the primary language, specialized metadata fields for Danish administrative structures, and integration with Danish identity management systems. The theme incorporates responsive design principles optimized for various devices while maintaining compliance with Danish web accessibility regulations (WCAG). Visual elements include Danish government branding, color schemes, typography, and iconography that create a cohesive experience for Danish citizens accessing open government data. Essential for Danish government agencies and municipalities requiring standardized, compliant, and culturally appropriate data portal interfaces.