FestivalOversigt.dk was created to make discovering festivals in Denmark easier by bringing fragmented festival information into one structured platform. The product needed to handle continuously changing dates, locations, ticket information, lineups, and practical details while still providing a fast and simple experience for visitors.

Festival information is spread across individual websites, ticket providers, social platforms, and announcements, and the underlying data changes continuously. The challenge was therefore not only building a searchable frontend, but creating a reliable data model and publishing workflow that could distinguish festivals from individual yearly editions, prevent incomplete records from being published, and keep information maintainable as the dataset grew.

I built FestivalOversigt.dk as a structured discovery platform with Next.js, TypeScript, Supabase, and PostgreSQL. Festival and edition data is stored separately, allowing dates, tickets, lineups, sources, and practical information to evolve independently for each year. The frontend provides search and discovery functionality while the underlying publishing rules and data-quality workflows control which editions are ready to appear publicly.

A major part of the project is the data layer behind the interface. Festivals and yearly editions are modeled separately, with structured fields for dates, locations, tickets, sources, practical information, and related data. Automated audits and publishing rules are used to identify missing or inconsistent information before records become publicly visible.

Structured festival and yearly edition data stored in Supabase

Search and filtering across the festival catalogue

Dedicated festival and yearly overview pages

Publishing rules that prevent incomplete editions from going live

Data-quality auditing and enrichment workflows

Danish, English, and German localized routes

Canonical URLs, hreflang, sitemaps, and structured event data

Responsive layouts across desktop and mobile

GA4 tracking with Consent Mode v2

Newsletter integration for festival updates

The platform was expanded from a Danish-only product into a multilingual architecture supporting Danish, English, and German. Localized routes, canonical URLs, hreflang relationships, separate sitemap coverage, and translated content allow the same structured festival data to serve multiple audiences without duplicating the underlying records.

SEO is built into the platform architecture rather than added as a separate layer. Festival and edition pages use structured metadata, canonical URLs, localized hreflang relationships, dedicated sitemaps, and Event structured data to make the underlying dataset understandable to both users and search engines.

FestivalOversigt.dk has developed into an actively maintained festival database rather than a static directory. At the time of this case study, the platform contains 149 active 2027 editions, including 112 published editions, with publishing rules ensuring that no public edition violates the current data-quality policy. The underlying architecture allows the catalogue, languages, content, and dataset to continue expanding without rebuilding the platform.

I designed, developed, and operate the platform end to end, including product architecture, UX/UI, frontend development, Supabase and PostgreSQL data modeling, data-quality workflows, internationalization, technical SEO, analytics, deployment, and ongoing dataset maintenance.